Cita APA

Fridgen, J. D., & Fridgen, J. D. (1990). Dimensions of tourism. Michigan: Educational Institute of the American Hotel & Motel Association.

Citación estilo Chicago

Fridgen, Joseph D., y Joseph D. Fridgen. Dimensions of Tourism. Michigan: Educational Institute of the American Hotel & Motel Association, 1990.

Cita MLA

Fridgen, Joseph D., y Joseph D. Fridgen. Dimensions of Tourism. Michigan: Educational Institute of the American Hotel & Motel Association, 1990.