APA (7th ed.) Citation

Willis, J. F., & Primack, M. L. (1977). Explorations in economics. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Willis, James Frederick, and Martin L. Primack. Explorations in Economics. Boston: Houghton Mifflin, 1977.

MLA (9th ed.) Citation

Willis, James Frederick, and Martin L. Primack. Explorations in Economics. Houghton Mifflin, 1977.