APA (7th ed.) Citation

Cox, D. P., & Cox, H. R. (1965). Introductory geology. W.H. Freeman.

Chicago Style (17th ed.) Citation

Cox, Dennis P., and Helen R. Cox. Introductory Geology. W.H. Freeman, 1965.

MLA (8th ed.) Citation

Cox, Dennis P., and Helen R. Cox. Introductory Geology. W.H. Freeman, 1965.

Warning: These citations may not always be 100% accurate.