एपीए उद्धरण

Cragg. (1967). Advances in ecological research. Acadamic.

शिकागो स्टाइल उद्धरण

Cragg. Advances in Ecological Research. Acadamic, 1967.

एमएलए उद्धरण

Cragg. Advances in Ecological Research. Acadamic, 1967.