Cita APA

Hartman, O. n. 1., & Hartman, O. n. 1. (1939). Polychaetous annelids. [Los Ángeles, Calif.]: University of Southern California Press.

Citación estilo Chicago

Hartman, Olga n. 1900, y Olga n. 1900 Hartman. Polychaetous Annelids. [Los Ángeles, Calif.]: University of Southern California Press, 1939.

Cita MLA

Hartman, Olga n. 1900, y Olga n. 1900 Hartman. Polychaetous Annelids. [Los Ángeles, Calif.]: University of Southern California Press, 1939.