APA

Transportation Research Record nr 562, . (1976). Measures of effectiveness, railroad-highway grade crossings, and visibility. Washington DC: Transportation Research Record nr 562.

Chicago

Transportation Research Record nr 562, . 1976. Measures of effectiveness, railroad-highway grade crossings, and visibility. Washington DC: Transportation Research Record nr 562.

Harvard

Transportation Research Record nr 562, . (1976). Measures of effectiveness, railroad-highway grade crossings, and visibility. Washington DC: Transportation Research Record nr 562.

MLA

Transportation Research Record nr 562, . Measures of effectiveness, railroad-highway grade crossings, and visibility. Washington DC: Transportation Research Record nr 562. 1976.