(1974). Management and operations of Singapore Bus Service Ltd: Report of Government team of officials. s.n..
Chicago-viite (17. p.)Management and Operations of Singapore Bus Service Ltd: Report of Government Team of Officials. [Singapore: s.n., 1974.
MLA-viite (8. p.)Management and Operations of Singapore Bus Service Ltd: Report of Government Team of Officials. s.n., 1974.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.