एपीए उद्धरण

Beder, S. (2007). Environmental principles and policies: An interdisciplinary introduction. Viva Books.

शिकागो स्टाइल उद्धरण

Beder, Sharon. Environmental Principles and Policies: An Interdisciplinary Introduction. New Delhi: Viva Books, 2007.

एमएलए उद्धरण

Beder, Sharon. Environmental Principles and Policies: An Interdisciplinary Introduction. Viva Books, 2007.