APA

Gibbs R., Wotzak G., Byer S., Johnson R., Hill B. & Werner P. (1977). Emissions from in-use catalyst vehicles. Warrendale, PA: Society of Automotive Engineers. Paper nr 77 00 64.

Chicago

Gibbs R, Wotzak G, Byer S, Johnson R, Hill B and Werner P. 1977. Emissions from in-use catalyst vehicles. Warrendale, PA: Society of Automotive Engineers. Paper nr 77 00 64.

Harvard

Gibbs R., Wotzak G., Byer S., Johnson R., Hill B. and Werner P. (1977). Emissions from in-use catalyst vehicles. Warrendale, PA: Society of Automotive Engineers. Paper nr 77 00 64.

MLA

Gibbs R, Wotzak G, Byer S, Johnson R, Hill B and Werner P. Emissions from in-use catalyst vehicles. Warrendale, PA: Society of Automotive Engineers. Paper nr 77 00 64. 1977.