Williams, S. (2009). Tourism geography: A new synthesis. New York: Routledge.
Trích dẫn kiểu ChicagoWilliams, Stephen. Tourism Geography: A New Synthesis. New York: Routledge, 2009.
MLA引文Williams, Stephen. Tourism Geography: A New Synthesis. New York: Routledge, 2009.
警告：这些引文格式不一定是100％准确.