Παραπομπή APA

Burn, D. M. (1980). Encyclopedia of the animal world (in 21 volume). Octopus Books.

Παραπομπή Chicago Style

Burn, David M. Encyclopedia of the Animal World (in 21 Volume). London: Octopus Books, 1980.

Παραπομπή MLA

Burn, David M. Encyclopedia of the Animal World (in 21 Volume). Octopus Books, 1980.