APA استشهاد

Smith,Kerry V. (1976). The economic consequences of air pollution. Ballinger Publishing Company.

استشهاد بنمط شيكاغو

Smith,Kerry V. The Economic Consequences of Air Pollution. Cambridge: Ballinger Publishing Company, 1976.

MLA استشهاد

Smith,Kerry V. The Economic Consequences of Air Pollution. Ballinger Publishing Company, 1976.