Wilbur Smith and Associates, World Bank, & Parsons Brinckerhoff/Tudor/Bechtel. (1981). Singapore Mass Transit study, phase ...: Report in brief. W. Smith.
Lua i Stíl Chicago (17ú heag.)Wilbur Smith and Associates, World Bank, agus Parsons Brinckerhoff/Tudor/Bechtel. Singapore Mass Transit Study, Phase ...: Report in Brief. [New Haven?]: W. Smith, 1981.
Lua MLA (8ú heag.)Wilbur Smith and Associates, et al. Singapore Mass Transit Study, Phase ...: Report in Brief. W. Smith, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.