Cita APA

Zim, H. S. 1., & Shaffer, P. R. (1957). Rocks and minerals: A guide to familiar minerals, gems, ores and rocks. Nueva York: Graylock Press.

Citación estilo Chicago

Zim, Herbert Spencer 1909-1994, y Paul Raymond Shaffer. Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores and Rocks. Nueva York: Graylock Press, 1957.

Cita MLA

Zim, Herbert Spencer 1909-1994, y Paul Raymond Shaffer. Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores and Rocks. Nueva York: Graylock Press, 1957.