Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.