Drucker, P. F. (1969). The age of discontinuity: Guidelines to our changing society. Harper Colophon Books.
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Chicago-čujuhus (17. p.)
Drucker, Peter F. The Age of Discontinuity: Guidelines to Our Changing Society. New York: Harper Colophon Books, 1969.
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MLA-čujuhus (9. p.)
Drucker, Peter F. The Age of Discontinuity: Guidelines to Our Changing Society. Harper Colophon Books, 1969.
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