Παραπομπή APA

(1977). Leadership: Part III. [s.l.]: President and Fellows of Harvard College.

Παραπομπή Chicago Style

Leadership: Part III. [s.l.]: President and Fellows of Harvard College, 1977.

Παραπομπή MLA

Leadership: Part III. [s.l.]: President and Fellows of Harvard College, 1977.

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