APA استشهاد

Allen, A. A. (1961). Book of bird life (2nd ed.). Toronto.

استشهاد بنمط شيكاغو

Allen, Arthur A. Book of Bird Life. 2nd ed. New york: Toronto, 1961.

MLA استشهاد

Allen, Arthur A. Book of Bird Life. 2nd ed. Toronto, 1961.