APA

Aurelius J., Korobow N., . (1971). Visibility and audibility of trains approaching rail + highway grade crossings. New York: Systems Consultants. Report nr FRA-RP-71-2.

Chicago

Aurelius JP, Korobow N, . 1971. Visibility and audibility of trains approaching rail + highway grade crossings. New York: Systems Consultants. Report nr FRA-RP-71-2.

Harvard

Aurelius J., Korobow N., . (1971). Visibility and audibility of trains approaching rail + highway grade crossings. New York: Systems Consultants. Report nr FRA-RP-71-2.

MLA

Aurelius JP, Korobow N, . Visibility and audibility of trains approaching rail + highway grade crossings. New York: Systems Consultants. Report nr FRA-RP-71-2. 1971.