APA (7th ed.) Citation

Ruth, J. W. (1942). The molluscan genus siphonalia of the Pacific coast Tertiary. University of California Press.

Chicago Style (17th ed.) Citation

Ruth, John William. The Molluscan Genus Siphonalia of the Pacific Coast Tertiary. Berkeley, CA: University of California Press, 1942.

MLA (9th ed.) Citation

Ruth, John William. The Molluscan Genus Siphonalia of the Pacific Coast Tertiary. University of California Press, 1942.