APA引文
(1990). The 1990 world book year book.: The annual supplement to the world book encyclopedia (ed.). World book, Inc..
芝加哥风格引文
The 1990 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. Chicago: World book, Inc., 1990.
MLA引文
The 1990 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. World book, Inc., 1990.
警告：这些引文格式不一定是100％准确.