APA
Boella M. J., . (1974). Personnel management in the hotel and catering industry. Barrie & Jenkins, Europe: .
Chicago
Boella M J, . 1974. Personnel management in the hotel and catering industry. Barrie & Jenkins, Europe: .
Harvard
Boella M. J., . (1974). Personnel management in the hotel and catering industry. Barrie & Jenkins, Europe: .
MLA
Boella M J, . Personnel management in the hotel and catering industry. Barrie & Jenkins, Europe: . 1974.