The body of your paper uses a half-inch first line indent and is double-spaced. APA style provides for up to five heading levels, shown in the paragraphs that follow. Note that the word Introduction should not be used as an initial heading, as it’s assumed that your paper begins with an introduction.
References Last Name, F. M. (Year). Article Title. Journal Title, Pages From – To. Last Name, F. M. (Year). Book Title. City Name: Publisher Name