Cita APA (7th ed.)

Parsley, L. L., & Robinson, R. (1982). The TRRL road investment model for developing countries (RTIM2). Transport and Road Research Laboratory.

Cita Chicago (17th ed.)

Parsley, Linda L., i R. Robinson. The TRRL Road Investment Model for Developing Countries (RTIM2). Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.

Cita MLA (9th ed.)

Parsley, Linda L., i R. Robinson. The TRRL Road Investment Model for Developing Countries (RTIM2). Transport and Road Research Laboratory, 1982.