APA استشهاد

Valdiya, K. S. A. (2004). Geology, environment and society.

استشهاد بنمط شيكاغو

Valdiya, K S; Author. Geology, Environment and Society. Hyderabad, Universities Press (India) Pvt Ltd, 2004.

MLA استشهاد

Valdiya, K S; Author. Geology, Environment and Society. 2004.