The Chicago Manual of Style has two distinct formats. Author-Date, which is used in-text citations, notes, and bibliography. These forms use footnotes and endnotes. Author-Date citations are more common in the sciences and social sciences, while the NB style is more standard for creative endeavors, history, and humanities.
While both styles use similar structuring for the variables of the paper.
• Place the writer's last name and year of publications in parenthesis.
• Place the citation directly after the information you are going to cite, inside any punctuation.
• Leave a space between the novelist's name and date.
• Do not use a comma. For example, (Martin, 1982).
• If you don’t know the author’s name, use the name of the company that published the text or a shortened version of the title in place of the author’s name.
• Do not include the author’s name in parenthesis if you have already stated the name in the sentence with the citation.
• Separate the names of two or three author’s names with commas.
• Characterize multiple publications with the same author and date by using letters.
• Separate multiple citations with semicolons.
• Include page numbers when you are citing specific passages.