Παραπομπή APA

Johnson, H. J. (1962). Keeping fit in your executive job. United States of America: American Management Association.

Παραπομπή Chicago Style

Johnson, Harry J. Keeping Fit in Your Executive Job. United States of America: American Management Association, 1962.

Παραπομπή MLA

Johnson, Harry J. Keeping Fit in Your Executive Job. United States of America: American Management Association, 1962.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.