Cita APA (7th ed.)

Zaitchik, J. A., & Wiehe, R. E. (1993). Human values: Perspectives on six themes. WCB.

Cita Chicago (17th ed.)

Zaitchik, Joseph A., i Roger E. Wiehe. Human Values: Perspectives on Six Themes. Wisconsin: WCB, 1993.

Cita MLA (9th ed.)

Zaitchik, Joseph A., i Roger E. Wiehe. Human Values: Perspectives on Six Themes. WCB, 1993.