APA

Burton M., . (19). The Marshall Cavendish international wildlife encyclopedia. New York [u.a.]: Marshall Cavendish.

Chicago

Burton Maurice, . 19. The Marshall Cavendish international wildlife encyclopedia. New York [u.a.]: Marshall Cavendish.

Harvard

Burton M., . (19). The Marshall Cavendish international wildlife encyclopedia. New York [u.a.]: Marshall Cavendish.

MLA

Burton Maurice, . The Marshall Cavendish international wildlife encyclopedia. New York [u.a.]: Marshall Cavendish. 19.