APA (7th ed.) Citation

Stephens, J. E., & Goetz, W. H. (1961). A study of the effects of aggregate factors on pavement friction. Purdue University.

Chicago Style (17th ed.) Citation

Stephens, Jack E., and W. H. Goetz. A Study of the Effects of Aggregate Factors on Pavement Friction. Lafayette: Purdue University, 1961.

MLA (9th ed.) Citation

Stephens, Jack E., and W. H. Goetz. A Study of the Effects of Aggregate Factors on Pavement Friction. Purdue University, 1961.