Cita APA (7a ed.)

Davis, O. L. (1971). Learning about countries and societies (Teacher ed.). American Book.

Cita Chicago Style (17a ed.)

Davis, Ozro Luke. Learning About Countries and Societies. Teacher ed. New York [u.a.]: American Book, 1971.

Cita MLA (9a ed.)

Davis, Ozro Luke. Learning About Countries and Societies. Teacher ed. American Book, 1971.