Singapore Tourist Promotion Board. Research Dept. (1975). Pleasure/vacation visitors from New Zealand to Singapore, with special reference to visitors on group tours, 1972-1974. Singapore Tourist Promotion Board.
Chicago Style (17th ed.) CitationSingapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from New Zealand to Singapore, with Special Reference to Visitors on Group Tours, 1972-1974. Singapore: Singapore Tourist Promotion Board, 1975.
MLA引文Singapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from New Zealand to Singapore, with Special Reference to Visitors on Group Tours, 1972-1974. Singapore Tourist Promotion Board, 1975.
警告：这些引文格式不一定是100％准确.