APA

Transportation Research Record nr 670, . (1978). Air quality analysis in transportation planning. Washington, DC: Transportation Research Record nr 670.

Chicago

Transportation Research Record nr 670, . 1978. Air quality analysis in transportation planning. Washington, DC: Transportation Research Record nr 670.

Harvard

Transportation Research Record nr 670, . (1978). Air quality analysis in transportation planning. Washington, DC: Transportation Research Record nr 670.

MLA

Transportation Research Record nr 670, . Air quality analysis in transportation planning. Washington, DC: Transportation Research Record nr 670. 1978.