APA style requires page numbers only for direct quotations or references to a specific part of a source, such as a figure, a table, or an equation. Otherwise, page numbers are usually not included in the citation. To indicate page numbers, use the abbreviation p. for a single page or pp. for multiple pages, a space, and the page number or numbers. For a range of numbers, write out the full beginning and ending numbers and separate them with a hyphen.