APA

Transport Research Laboratory T., Current topics in transport CT 28, . (1993). Geographic information systems in transport (1990-1993). Crowthorne: Transport Research Laboratory, TRL.

Chicago

Transport Research Laboratory TRL, Current topics in transport CT 28, . 1993. Geographic information systems in transport (1990-1993). Crowthorne: Transport Research Laboratory, TRL.

Harvard

Transport Research Laboratory T., Current topics in transport CT 28, . (1993). Geographic information systems in transport (1990-1993). Crowthorne: Transport Research Laboratory, TRL.

MLA

Transport Research Laboratory TRL, Current topics in transport CT 28, . Geographic information systems in transport (1990-1993). Crowthorne: Transport Research Laboratory, TRL. 1993.