The following links provide samples of student-paper formatting in APA's 7th edition style.  The first is from APA's web site; the second is from Purdue OWL's web site.

The following links provide samples of professional-paper formatting in APA's 7th edition style.  The first is from APA's web site; the second is from Purdue OWL's web site.  The formatting of these professional papers is a bit more involved than that of the student sample papers.

While APA doesn't itself provide an example of how to format a literature review, it does provide some guidance in its Publication Manual* about the content of a lit review:

Literature Reviews:

• provide summaries and evaluations of findings/theories in the research literature of a particular discipline or field;
• may include qualitative, quantitative, or a variety of other types of research;
• should define and clarify the problem being reviewed;
• summarize previous research to inform readers of where research stands currently in regard to the problem;
• identify relationships, contradictions, gaps, and inconsistencies in the current literature;
• suggest next steps or further research needed to move toward solving the problem.  (APA, 2020, Section 1.6, p. 8)

*American Psychological Association. (2020). Publication manual of the American Psychological Association: The official guide to APA style (7th ed.). American Psychological Association.