APA

Walters M., . (1999). Animals of the world. London: Parragon.

Chicago

Walters Martin, . 1999. Animals of the world. London: Parragon.

Harvard

Walters M., . (1999). Animals of the world. London: Parragon.

MLA

Walters Martin, . Animals of the world. London: Parragon. 1999.