APA

Barris M. A., Reinhart S. B. & Wahlquist F. H. (1991). The influence of lubricating oil and diesel fuel on ash accumulation in an exhaust particulate trap. Warrendale, PA: Society of Automotive Engineers.

Chicago

Barris Marty A, Reinhart Susan B and Wahlquist Fred H. 1991. The influence of lubricating oil and diesel fuel on ash accumulation in an exhaust particulate trap. Warrendale, PA: Society of Automotive Engineers.

Harvard

Barris M. A., Reinhart S. B. and Wahlquist F. H. (1991). The influence of lubricating oil and diesel fuel on ash accumulation in an exhaust particulate trap. Warrendale, PA: Society of Automotive Engineers.

MLA

Barris Marty A, Reinhart Susan B and Wahlquist Fred H. The influence of lubricating oil and diesel fuel on ash accumulation in an exhaust particulate trap. Warrendale, PA: Society of Automotive Engineers. 1991.