APA-viite

Ballabh,, P. (2009). Introduction to geology. Cyber Tech.

Chicago-tyylinen lähdeviittaus

Ballabh,, Parikshit. Introduction to Geology. New Delhi: Cyber Tech, 2009.

MLA-viite

Ballabh,, Parikshit. Introduction to Geology. Cyber Tech, 2009.