Cita APA

Hardwick, R., & Hardwick, R. (1963). Skin and scuba diving ([1.edition].). Derby, Conn.: Monarch.

Citación estilo Chicago

Hardwick, Richard, y Richard Hardwick. Skin and Scuba Diving. [1.edition]. Derby, Conn.: Monarch, 1963.

Cita MLA

Hardwick, Richard, y Richard Hardwick. Skin and Scuba Diving. [1.edition]. Derby, Conn.: Monarch, 1963.