Clift, S., & Grabowski, P. (1997). Tourism and health: Risks, research and responses. Londra: Pinter.
استشهاد بنمط شيكاغوClift, Stephen,ed., and Peter,ed Grabowski. Tourism and Health: Risks, Research and Responses. Londra: Pinter, 1997.
MLA استشهادClift, Stephen,ed., and Peter,ed Grabowski. Tourism and Health: Risks, Research and Responses. Londra: Pinter, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.