References
^ Viktor E. Frankl, Victor E. FranklThe Will to Meaning : Foundations and Applications of Logotherapy by Viktor E. Frankl and Victor E. Frankl (1988, Paperback) ISBN 9780452010345 (revised Feb 2016)^ Frankl, Victor E. (Author) (2014). Will to Meaning : Foundations and Applications of Logotherapy, PENGUIN BOOKS. BiggerBooks. ISBN 9780452010345 (revised Aug 2023)
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