Lam, P. L. (1969). Singapore Tourist Promotion Board: A study in reorganisation. Singapore Tourist Promotion Board.
Chicago-referens (17:e uppl.)Lam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore: Singapore Tourist Promotion Board, 1969.
MLA-referens (8:e uppl.)Lam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore Tourist Promotion Board, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.