APA (7th ed.) Citation

Bonewitz, Carruthers, & Efthim. (2005). Rock and gem. Dorling Kindersly.

Chicago Style (17th ed.) Citation

Bonewitz, Carruthers, and Efthim. Rock and Gem. London: Dorling Kindersly, 2005.

MLA (8th ed.) Citation

Bonewitz, et al. Rock and Gem. Dorling Kindersly, 2005.