एपीए उद्धरण

Caldwell, L. K. (1991). Internatinoal Envirnmental Policy Emergence and Dimensions (2nd ed.). Affiliated East-West Press.

शिकागो स्टाइल उद्धरण

Caldwell, Lynton Keith. Internatinoal Envirnmental Policy Emergence and Dimensions. 2nd ed. New Delhi: Affiliated East-West Press, 1991.

एमएलए उद्धरण

Caldwell, Lynton Keith. Internatinoal Envirnmental Policy Emergence and Dimensions. 2nd ed. Affiliated East-West Press, 1991.