Παραπομπή σε μορφή APA (7η εκδ.)

Williams, A. M. (1991). Tourism and economic development: Western European experiences (2nd ed.). John Wiley and Sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Williams, Allan M. Tourism and Economic Development: Western European Experiences. 2nd ed. Chichester: John Wiley and Sons, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Williams, Allan M. Tourism and Economic Development: Western European Experiences. 2nd ed. John Wiley and Sons, 1991.