Citace podle APA (7th ed.)
Conwel, R. H., & Jordan, W. G. (1983). Motivational classics: Three reowned books in one volume. Life management Services.
Citace podle Chicago (17th ed.)
Conwel, Russell H., a William George Jordan. Motivational Classics: Three Reowned Books in One Volume. Life management Services, 1983.
Citace podle MLA (9th ed.)
Conwel, Russell H., a William George Jordan. Motivational Classics: Three Reowned Books in One Volume. Life management Services, 1983.
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