Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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