APA (7th ed.) Citation

Gill, R. (1989). Chemical fundamentals of geology. Unwin Hyman.

Chicago Style (17th ed.) Citation

Gill, Robin. Chemical Fundamentals of Geology. London: Unwin Hyman, 1989.

MLA (9th ed.) Citation

Gill, Robin. Chemical Fundamentals of Geology. Unwin Hyman, 1989.