Παραπομπή APA

Haas, F. C. (1968). Executive obsolescence. American management association.

Παραπομπή Chicago Style

Haas, Frederick C. Executive Obsolescence. United Staltes of America: American management association, 1968.

Παραπομπή MLA

Haas, Frederick C. Executive Obsolescence. American management association, 1968.