APA (7th ed.) Citation

Green, A. K. (1887). 7 to 12: A detective story. Putnam.

Chicago Style (17th ed.) Citation

Green, Anna Katharine. 7 to 12: A Detective Story. New York: Putnam, 1887.

MLA (9th ed.) Citation

Green, Anna Katharine. 7 to 12: A Detective Story. Putnam, 1887.