World Book, Inc. (1990). Christmas in the Philippines: Christmas around the world from World Book. World Book.
Chicago Style (17th ed.) CitationWorld Book, Inc. Christmas in the Philippines: Christmas Around the World from World Book. Chicago: World Book, 1990.
MLA引文World Book, Inc. Christmas in the Philippines: Christmas Around the World from World Book. World Book, 1990.
警告:這些引文格式不一定是100%准確.