APA
Walker J. R., . (2002). Introduction to hospitality 3rd ed. [Place of publication not identified]: Pearson Education Asia Pte Ltd.
Chicago
Walker John R, . 2002. Introduction to hospitality 3rd ed. [Place of publication not identified]: Pearson Education Asia Pte Ltd.
Harvard
Walker J. R., . (2002). Introduction to hospitality 3rd ed. [Place of publication not identified]: Pearson Education Asia Pte Ltd.
MLA
Walker John R, . Introduction to hospitality 3rd ed. [Place of publication not identified]: Pearson Education Asia Pte Ltd. 2002.