Dyfyniad APA

Astroff, M. T., & Abbey, J. R. (1998). Convention management and service (5th ed.). Educational Institute of the American Hotel & Motel Assoc.

Dyfyniad Arddull Chicago

Astroff, Milton T., and James R. Abbey. Convention Management and Service. 5th ed. Michigan: Educational Institute of the American Hotel & Motel Assoc, 1998.

Dyfyniad MLA

Astroff, Milton T., and James R. Abbey. Convention Management and Service. 5th ed. Educational Institute of the American Hotel & Motel Assoc, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.