एपीए उद्धरण

Crosby, A. W. Ecological imperialism: The biological expansion of Europe. CUP.

शिकागो स्टाइल उद्धरण

Crosby, Alfred W. Ecological Imperialism: The Biological Expansion of Europe. CUP.

एमएलए उद्धरण

Crosby, Alfred W. Ecological Imperialism: The Biological Expansion of Europe. CUP.