APA (7e ed.) Bronvermelding

Wallece, R. A. (1981). Biology The World Of Life (3 ed.). s.n.

Chicago (17e ed.) Bronvermelding

Wallece, Robert A. Biology The World Of Life. 3 ed. Dallas: s.n, 1981.

MLA (9e ed.) Bronvermelding

Wallece, Robert A. Biology The World Of Life. 3 ed. s.n, 1981.