Cita APA (7th ed.)

Carlsen, J., & Butler, R. (2011). Island tourism: Sustainable perspectives. CABI.

Cita Chicago (17th ed.)

Carlsen, Jack, i Richard Butler. Island Tourism: Sustainable Perspectives. Wallingford, Oxfordshire, [England]: CABI, 2011.

Cita MLA (9th ed.)

Carlsen, Jack, i Richard Butler. Island Tourism: Sustainable Perspectives. CABI, 2011.