APA استشهاد

Williams, A. (2003). Understanding the hospitality consumer. Butterworth-Heinemann.

استشهاد بنمط شيكاغو

Williams, Alistair. Understanding the Hospitality Consumer. Oxford: Butterworth-Heinemann, 2003.

MLA استشهاد

Williams, Alistair. Understanding the Hospitality Consumer. Butterworth-Heinemann, 2003.