APA

Hummer J. E., Montgomery R. E. & Sinha K. C. (1990). Motorist understanding of and preferences for left-turn signals. : Transportation Research Record.

Chicago

Hummer Joseph E, Montgomery Robert E and Sinha Kumares C. 1990. Motorist understanding of and preferences for left-turn signals. : Transportation Research Record.

Harvard

Hummer J. E., Montgomery R. E. and Sinha K. C. (1990). Motorist understanding of and preferences for left-turn signals. : Transportation Research Record.

MLA

Hummer Joseph E, Montgomery Robert E and Sinha Kumares C. Motorist understanding of and preferences for left-turn signals. : Transportation Research Record. 1990.