Lam, P. L. (1969). Singapore Tourist Promotion Board: A study in reorganisation. Singapore Tourist Promotion Board.
Lua i Stíl Chicago (17ú heag.)Lam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore: Singapore Tourist Promotion Board, 1969.
Lua MLA (8ú heag.)Lam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore Tourist Promotion Board, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.