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"Dreams, Evolution, and Value Fulfilment", Jane Roberts, Amber-Allen Publishing.

"Unlimited Power: The New Science of Personal Achievement" oleh Anthony Robbins. Random House Publishing Group, 1987. ISBN 0-449-90280-3.

Hanfling, Oswald [ed.] "Life and Meaning: A Reader 1987", Oxford: Basil Blackwell. ISBN 0-631-15784-0 .

Nozick, Robert. "The Examined Life: Philosophical Meditations 1989", New York: Pocket Books. ISBN 0-671-72501-7.

Wiggins, David. "Truth, Invention, and the Meaning of Life" dalam bukunya, "Proceedings of the British Academy LXII (1976)"; dicetak semula dalam bukunya, "Needs, Values, Truth" (Siri Aristotelian Society, Jilid 6) edisi ke-2, 1991, Oxford, Basil Blackwell. ISBN 0-631-17555-5.