APA (7th ed.) Citation
(1989). The world book encyclopedia of science: The plant world. World Book,Inc.
Chicago Style (17th ed.) Citation
The World Book Encyclopedia of Science: The Plant World. Chicago: World Book,Inc, 1989.
MLA (9th ed.) Citation
The World Book Encyclopedia of Science: The Plant World. World Book,Inc, 1989.
Warning: These citations may not always be 100% accurate.