Cita APA (7th ed.)

Frye, F. F. (1973). Alternative multimodal passenger transportation systems: Comparative economic analysis. Highway Research Board, National Research Council.

Cita Chicago (17th ed.)

Frye, Frederick F. Alternative Multimodal Passenger Transportation Systems: Comparative Economic Analysis. [Washington]: Highway Research Board, National Research Council, 1973.

Cita MLA (9th ed.)

Frye, Frederick F. Alternative Multimodal Passenger Transportation Systems: Comparative Economic Analysis. Highway Research Board, National Research Council, 1973.