Cita APA (7a ed.)

McLenighan, V., & Zeleny, R. O. (1982). Christmas in Austria. World Book Encyclopedia.

Cita Chicago Style (17a ed.)

McLenighan, Valjean, y Robert O. Zeleny. Christmas in Austria. Chicago, Illinois: World Book Encyclopedia, 1982.

Cita MLA (8a ed.)

McLenighan, Valjean, y Robert O. Zeleny. Christmas in Austria. World Book Encyclopedia, 1982.