Gaya APA

Swanson, C, P., Hayter, R. (NULL). Careers and training in hotels, catering and tourism . London:: London: Butterworth Heinemann; 1993.

Gaya MLA

Swanson, Carl, P.., Hayter, Roy. "Careers and training in hotels, catering and tourism". London:: London: Butterworth Heinemann; 1993, NULL. Text.