APA (7th ed.) Citation

Root, E. S., & Crocker, M. (1918). Over periscope pond: Letters from two American girls in Paris, October 1916-January 1918. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Root, Esther Sayles, and Marjorie Crocker. Over Periscope Pond: Letters from Two American Girls in Paris, October 1916-January 1918. Boston: Houghton Mifflin, 1918.

MLA (9th ed.) Citation

Root, Esther Sayles, and Marjorie Crocker. Over Periscope Pond: Letters from Two American Girls in Paris, October 1916-January 1918. Houghton Mifflin, 1918.