APA-referens (7:e uppl.)

Keays, R. R., Ramsay, W., & Groves, D. I. (1989). The geology of gold deposits: The perspective in 1988. The Economic Geology Publ.

Chicago-referens (17:e uppl.)

Keays, Reid R., W.R.H Ramsay, och D. I. Groves. The Geology of Gold Deposits: The Perspective in 1988. New Haven, Conn.: The Economic Geology Publ, 1989.

MLA-referens (9:e uppl.)

Keays, Reid R., et al. The Geology of Gold Deposits: The Perspective in 1988. The Economic Geology Publ, 1989.