APA (7th ed.) Citation

Embrey, P. G., & Symes, R. F. (1987). Minerals of Cornwall and Devon. British Museum [u.a.].

Chicago Style (17th ed.) Citation

Embrey, Peter G., and Robert F. Symes. Minerals of Cornwall and Devon. London: British Museum [u.a.], 1987.

MLA (9th ed.) Citation

Embrey, Peter G., and Robert F. Symes. Minerals of Cornwall and Devon. British Museum [u.a.], 1987.