APA
Roberts J., . (1993). Marketing for the hospitality industry. Hodder & Stoughton, London: .
Chicago
Roberts John, . 1993. Marketing for the hospitality industry. Hodder & Stoughton, London: .
Harvard
Roberts J., . (1993). Marketing for the hospitality industry. Hodder & Stoughton, London: .
MLA
Roberts John, . Marketing for the hospitality industry. Hodder & Stoughton, London: . 1993.