A preliminary study of the Northern Ireland hotel classification scheme as a reflection of customer's needs / Roger J. Callan and Lisa Shenton
An attributional approach to hotel selection : the customers' perceptions / Roger J. Callan
An attributional approach to hotel selection : the managers perceptions / Roger J. Callan
Hotel guest history as a foundation for database marketing : embracing a pilot survey of UK hotels / Roger J. Callan, Andrea Teasdale