APA aipamena

World Book, Inc. (1990). Christmas in the Philippines: Christmas around the world from World Book. World Book.

Chicago Style aipamena

World Book, Inc. Christmas in the Philippines: Christmas Around the World from World Book. Chicago: World Book, 1990.

MLA aipamena

World Book, Inc. Christmas in the Philippines: Christmas Around the World from World Book. World Book, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.