LP explanation about page numbers

Page numbers should be the same font style and size as the document text.
In single-sided, unbound documents, it is recommended to place page numbers in the top right corner. Additionally, it is helpful to have the page number appear at the bottom center.
In book formatted documents, the page number should be located in either the upper or lower outer corner of each page. In either case, a margin of at least 0.75 inches is needed to accommodate the page number.