Παραπομπή APA

The Educational Institute of the American Hotel & Motel Association. (1972). Supervisory development text. [S.l.]: The Institute.

Παραπομπή Chicago Style

The Educational Institute of the American Hotel & Motel Association. Supervisory Development Text. [S.l.]: The Institute, 1972.

Παραπομπή MLA

The Educational Institute of the American Hotel & Motel Association. Supervisory Development Text. [S.l.]: The Institute, 1972.

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