This sample paper provides comprehensive information on how to format a paper in the APA Style:
SOURCE: American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000
An abstract is a brief, one-paragraph summary of your paper – generally 150-250 words. The abstract, like the title, should be able to stand alone and fully explain what your paper is about. A good abstract is accurate, nonevaluative, readable, and concise.
Not all instructors will require you to write an abstract, but if you publish professionally you will likely be asked to write one for any article/paper.
If you include an abstract in your paper, begin it on page two (its own page). Center and capitalize the word ‘Abstract.’ Do not indent the first line of your abstract, it should be written in block format.