APA

Gavey J., . (1963). Traffic signals near RR crossings. : California Street and Highway Conference. 15. Los Angeles.

Chicago

Gavey JW, . 1963. Traffic signals near RR crossings. : California Street and Highway Conference. 15. Los Angeles.

Harvard

Gavey J., . (1963). Traffic signals near RR crossings. : California Street and Highway Conference. 15. Los Angeles.

MLA

Gavey JW, . Traffic signals near RR crossings. : California Street and Highway Conference. 15. Los Angeles. 1963.