APA

Crosby Alfred W,, . (1986). Ecological imperialism :The biological expansion of Europe. Cambridge: Cambridge University Press.

Chicago

Crosby Alfred W,, . 1986. Ecological imperialism :The biological expansion of Europe. Cambridge: Cambridge University Press.

Harvard

Crosby Alfred W,, . (1986). Ecological imperialism :The biological expansion of Europe. Cambridge: Cambridge University Press.

MLA

Crosby Alfred W,, . Ecological imperialism :The biological expansion of Europe. Cambridge: Cambridge University Press. 1986.