Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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