APA (7th ed.) Citation

GILLULY, J. (1968). PRINCIPLES OF GEOLOGY. W. H. Freeman and Company.

Chicago Style (17th ed.) Citation

GILLULY, James. PRINCIPLES OF GEOLOGY. W. H. Freeman and Company, 1968.

MLA (8th ed.) Citation

GILLULY, James. PRINCIPLES OF GEOLOGY. W. H. Freeman and Company, 1968.

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