McLenighan, V., & Zeleny, R. O. (1982). Christmas in Austria. World Book Encyclopedia.
Chicago Style aipamenaMcLenighan, Valjean, and Robert O. Zeleny. Christmas in Austria. Chicago, Illinois: World Book Encyclopedia, 1982.
MLA aipamenaMcLenighan, Valjean, and Robert O. Zeleny. Christmas in Austria. World Book Encyclopedia, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.