Gaya APA

Strauss, K, H, (., Dukek, W, G, (. (1993). The impact of U.S. environmental regulations on fuel quality. (1993). : Philadelphia : ASTM.,.

Gaya MLA

Strauss, Kurt, H., (ed)., Dukek, William, G., (ed). "The impact of U.S. environmental regulations on fuel quality.". 1993 : Philadelphia : ASTM.,, 1993. Text.