APA استشهاد

Williams, S. (2004). Tourism: Critical concepts in the social sciences. Routledge.

استشهاد بنمط شيكاغو

Williams, Stephen. Tourism: Critical Concepts in the Social Sciences. London ; | New York: Routledge, 2004.

MLA استشهاد

Williams, Stephen. Tourism: Critical Concepts in the Social Sciences. Routledge, 2004.