APA (7th ed.) Citation

Kenworthy, L. S., & Birdie, R. A. (1969). Free and inexpensive materials on world affairs (3rd ed.). Teachers College Press.

Chicago Style (17th ed.) Citation

Kenworthy, Leonard Stout, and Richard A. Birdie. Free and Inexpensive Materials on World Affairs. 3rd ed. New York: Teachers College Press, 1969.

MLA (9th ed.) Citation

Kenworthy, Leonard Stout, and Richard A. Birdie. Free and Inexpensive Materials on World Affairs. 3rd ed. Teachers College Press, 1969.