Gaya APA

Billingis, M, P. (2001). Structural Geology (Ed. 3, cet. 15). New Delhi: Prentice,Hall of India Private Limited.

Gaya MLA

Billingis, Marland, P.. "Structural Geology". Ed. 3, cet. 15 New Delhi: Prentice,Hall of India Private Limited, 2001. Text.