If you are trying to cite a source that is not listed here, and you cannot find guidelines from APA elsewhere, you can create a generic reference. The Publication Manual lists certain elements that should be included in a generic reference:
Make sure to be familiar with what other APA citations look like and with the formatting rules.
Author. (Date). Title [Format]. Source.
Source: Publication Manual, 9.4
Personal communication can mean letters, memos, emails, interviews, telephone conversations, etc. that your readers will not be able to access. Since these items are not recoverable, it is not necessary to include in a reference list. Use parenthetical citations in the text only.
Source: Publication Manual, 8.9
For information retrieved from a mobile app (such as an iPhone or Android app), cite as follows:
Source: Publication Manual, 10.10 (example 79)
Artist, A. A. (copyright year). Title of work [Medium: Painting, drawing, sculpture, photograph, etc.]. Museum, Location. http://xxxxx
Source: Publication Manual 10.14 (example 97)
Only include a full reference to lecture notes or class materials that are behind a login screen (such as Canvas) if you are writing for an audience that will be able to retrieve them. Otherwise, cite it as a personal communication.
Author, A. A. (Year). Title of presentation [Lecture notes or PowerPoint slides]. Website. http://xxxxx
Source: Publication Manual, 10.14 (example 102); APA Style: Classroom or Intranet Resources
Author, A. A. (Year, Month Days of Conference). Title of poster session [Poster presentation]. Conference Name, location. http://xxxxx
Source: Publication Manual, 10.5 (example 62)
Author, A. A. (Year). Title of doctoral dissertation or master's thesis [Type, Institution]. Database/Archive Name. http://xxxxx
Sources: Publication Manual, 10.6 (examples 64-66)
Name v. Name, Volume Source Page (Court Date). http://xxxxx
Source: Publication Manual, 11.4 (examples 1-7)
From the Code of Federal Regulations
Exec. Order No. xxxxx, 3 C.F.R. Page (Year). http://xxxxx
Source: Publication Manual, 11.7 (example 21)
Name, A. A. (Year). Name of patent (Patent Identifier No. xxx). Patent Organization. http://xxxxx
Source: Publication Manual, 11.8 (example 22)
Name of the Statute/Act, Title Number Source § Section number(s) (Year of Code Used). http://xxxx
This statute was originally codified in 1991 and was last updated in 2017, so both dates are included.
Source: Publication Manual, 11.5 (examples 8-13)
If you wish to cite the U.S. Constitution as a whole, you may simply mention it in your paper without including a citation in the references list.
However, if you are citing a part of the Constitution, you should use the article, amendment, section, and/or clause numbers.
Source: Publication Manual, 11.9 (examples 23-27)
U.N. Charter art. xx, para. xx.
Source: Publication Manual, 11.9 (example 28)