APA (7e ed.) Bronvermelding

Schreiber, R. L. (1989). Save the birds (1st American ed.). Houghton Mifflin.

Chicago (17e ed.) Bronvermelding

Schreiber, Rudolf L. Save the Birds. 1st American ed. Boston: Houghton Mifflin, 1989.

MLA (9e ed.) Bronvermelding

Schreiber, Rudolf L. Save the Birds. 1st American ed. Houghton Mifflin, 1989.