Lam, P. L. (1969). Singapore Tourist Promotion Board: A study in reorganisation. Singapore Tourist Promotion Board.
Chicago Style aipamenaLam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore: Singapore Tourist Promotion Board, 1969.
MLA aipamenaLam, Peng Loon. Singapore Tourist Promotion Board: A Study in Reorganisation. Singapore Tourist Promotion Board, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.