APA (7th ed.) Citation

Greene, C. (1989). Christopher Columbus: A great explorer. Childrens Press.

Chicago Style (17th ed.) Citation

Greene, Carol. Christopher Columbus: A Great Explorer. Chicago: Childrens Press, 1989.

MLA (9th ed.) Citation

Greene, Carol. Christopher Columbus: A Great Explorer. Childrens Press, 1989.

Warning: These citations may not always be 100% accurate.