APA

Perez J., Clemmens W., Broering L. & Johnson J. (1978). Cooperative study of heavy duty diesel emission measurement methods. Warrendale, PA: SAE Technical Paper Series nr 78 01 12.

Chicago

Perez JM, Clemmens WC, Broering LC and Johnson JH. 1978. Cooperative study of heavy duty diesel emission measurement methods. Warrendale, PA: SAE Technical Paper Series nr 78 01 12.

Harvard

Perez J., Clemmens W., Broering L. and Johnson J. (1978). Cooperative study of heavy duty diesel emission measurement methods. Warrendale, PA: SAE Technical Paper Series nr 78 01 12.

MLA

Perez JM, Clemmens WC, Broering LC and Johnson JH. Cooperative study of heavy duty diesel emission measurement methods. Warrendale, PA: SAE Technical Paper Series nr 78 01 12. 1978.