एपीए उद्धरण

Gurdip Singh. (2016). Environmental Law (2nd ed.). Eastern Book Company.

शिकागो स्टाइल उद्धरण

Gurdip Singh. Environmental Law. 2nd ed. Lucknow: Eastern Book Company, 2016.

एमएलए उद्धरण

Gurdip Singh. Environmental Law. 2nd ed. Eastern Book Company, 2016.