APA

Hughes D., Goulburn J., . (1976). Economy with reduced exhaust emissions - a simple technique. : Society of Automotive Engineers. Paper nr 76 01 40.

Chicago

Hughes DW, Goulburn JR, . 1976. Economy with reduced exhaust emissions - a simple technique. : Society of Automotive Engineers. Paper nr 76 01 40.

Harvard

Hughes D., Goulburn J., . (1976). Economy with reduced exhaust emissions - a simple technique. : Society of Automotive Engineers. Paper nr 76 01 40.

MLA

Hughes DW, Goulburn JR, . Economy with reduced exhaust emissions - a simple technique. : Society of Automotive Engineers. Paper nr 76 01 40. 1976.