Singapore Tourist Promotion Board. Research Dept. (1976). Pleasure/vacation visitors from the U.S.A. to Singapore with special reference to visitors on group tours, 1972-1974. Singapore Tourist Promotion Board.
Lua i Stíl Chicago (17ú heag.)Singapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from the U.S.A. to Singapore with Special Reference to Visitors on Group Tours, 1972-1974. Singapore: Singapore Tourist Promotion Board, 1976.
Lua MLA (8ú heag.)Singapore Tourist Promotion Board. Research Dept. Pleasure/vacation Visitors from the U.S.A. to Singapore with Special Reference to Visitors on Group Tours, 1972-1974. Singapore Tourist Promotion Board, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.