The Chicago manual of style :
for authors, editors, and copywriters.

APA Citation

University of Chicago. Press. (1982). The Chicago manual of style: for authors, editors, and copywriters. 13th ed., rev. and expanded. Chicago: University of Chicago Press.

MLA Citation

University of Chicago. Press. The Chicago Manual of Style: for Authors, Editors, And Copywriters. 13th ed., rev. and expanded. Chicago: University of Chicago Press, 1982.