Singapore Tourist Promotion Board. Research Dept. (1976). Pleasure/vacation visitors from Hong Kong to Singapore, with special reference to visitors on group tours. Singapore Tourist Promotion Board.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Singapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from Hong Kong to Singapore, with Special Reference to Visitors on Group Tours. Singapore: Singapore Tourist Promotion Board, 1976.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Singapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from Hong Kong to Singapore, with Special Reference to Visitors on Group Tours. Singapore Tourist Promotion Board, 1976.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.