APA

Ritchie J. R. B., Goeldner C. R., . (1994). Travel, tourism, and hospitality research: a handbook for managers and researchers. New York: Wiley.

Chicago

Ritchie J R Brent, Goeldner Charles R, . 1994. Travel, tourism, and hospitality research: a handbook for managers and researchers. New York: Wiley.

Harvard

Ritchie J. R. B., Goeldner C. R., . (1994). Travel, tourism, and hospitality research: a handbook for managers and researchers. New York: Wiley.

MLA

Ritchie J R Brent, Goeldner Charles R, . Travel, tourism, and hospitality research: a handbook for managers and researchers. New York: Wiley. 1994.