APA format research paper should also contain the author’s notes.
The heading of the APA format research paper has a certain structure. Hence, it has a five-level system of headings so that if APA format research paper has a four sections only, use the headings depending on the subordination; remember that each line should be indented.
Considering the in-text citations, you should observe the following:
If the names of the authors are inserted into the text, you should point out the year of publication only.
If you state the authors in brackets, you should mention the surname and the year of publication.