Cita APA (7th ed.)

Wallace, M., & Smith, M. (2020). The spa manager's essential guide. Goodfellow Publishers, Limited.

Cita Chicago (17th ed.)

Wallace, Mike, i Melanie Smith. The Spa Manager's Essential Guide. Wolvercote, Oxford: Goodfellow Publishers, Limited, 2020.

Cita MLA (9th ed.)

Wallace, Mike, i Melanie Smith. The Spa Manager's Essential Guide. Goodfellow Publishers, Limited, 2020.