Citazione Stile APA (7a Edizione)

Nitschke, A. A., & Frye, W. (2008). Managing housekeeping operations (3.). American hotel & lodging educational institue.

Citazione stile Chigago Style (17a edizione)

Nitschke, Aleta A., e Willam Frye. Managing Housekeeping Operations. 3. Michigan: American hotel & lodging educational institue, 2008.

Citatione MLA (9a ed.)

Nitschke, Aleta A., e Willam Frye. Managing Housekeeping Operations. 3. American hotel & lodging educational institue, 2008.