Put your list in alphabetical order. Citing a letter, memo, or other correspondence ; A letter found in a subscription database ; Note. 3.This section contains information on The Chicago Manual of Style (CMOS) method of document formatting and citation. This guide is based on The Chicago Manual of Style, 17th ed. In authordate style, an intext citation consists of the author's name, the publication year, and (if relevant) a page number. This resource contains the Notes and Bibliography (NB) sample paper for the Chicago Manual of Style 17th edition. Chicago uses a footnote citation system. In the text, cite specific pages as applicable. Reference list entry. Write out numbers lower than 100.