Dyfyniad APA

Heller, F. A. e. (1959). New developments in training: Five studies in the efficient communication of skills. Polytechnic Management Association.

Dyfyniad Arddull Chicago

Heller, Frank A. ed. New Developments in Training: Five Studies in the Efficient Communication of Skills. [London]: Polytechnic Management Association, 1959.

Dyfyniad MLA

Heller, Frank A. ed. New Developments in Training: Five Studies in the Efficient Communication of Skills. Polytechnic Management Association, 1959.

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