Sanders, S., & Cheney, D. R. (1980). The Meaning of life: Questions, answers, and analysis. Prentice-Hall.
Chicago-viite (17. p.)Sanders, Steven, ja David R. Cheney. The Meaning of Life: Questions, Answers, and Analysis. Englewood Cliffs, N.J: Prentice-Hall, 1980.
MLA-viite (9. p.)Sanders, Steven, ja David R. Cheney. The Meaning of Life: Questions, Answers, and Analysis. Prentice-Hall, 1980.
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