APA (7th ed.) Citation

Preston, R. (1982). Teaching world understanding. Prentice-Hall.

Chicago Style (17th ed.) Citation

Preston, Ralph. Teaching World Understanding. New yark: Prentice-Hall, 1982.

MLA (9th ed.) Citation

Preston, Ralph. Teaching World Understanding. Prentice-Hall, 1982.

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