Cita APA (7th ed.)

Sanders, S., & Cheney, D. R. (1980). The Meaning of life: Questions, answers, and analysis. Prentice-Hall.

Cita Chicago (17th ed.)

Sanders, Steven, i David R. Cheney. The Meaning of Life: Questions, Answers, and Analysis. Englewood Cliffs, N.J: Prentice-Hall, 1980.

Cita MLA (9th ed.)

Sanders, Steven, i David R. Cheney. The Meaning of Life: Questions, Answers, and Analysis. Prentice-Hall, 1980.