APA

Transportation Research Record 1131, . (1987). Performance of aggregates in railroads and other track performance issues. Washington DC: Transportation Research Record 1131.

Chicago

Transportation Research Record 1131, . 1987. Performance of aggregates in railroads and other track performance issues. Washington DC: Transportation Research Record 1131.

Harvard

Transportation Research Record 1131, . (1987). Performance of aggregates in railroads and other track performance issues. Washington DC: Transportation Research Record 1131.

MLA

Transportation Research Record 1131, . Performance of aggregates in railroads and other track performance issues. Washington DC: Transportation Research Record 1131. 1987.