APA

Dahir S., Henry J. & Meyer W. (1979). Seasonal skid resistance variations. Harrisburg, PA: Pennsylvania Department of Transportation. Bureau of Materials, Testing and Research.

Chicago

Dahir SH, Henry JJ and Meyer WE. 1979. Seasonal skid resistance variations. Harrisburg, PA: Pennsylvania Department of Transportation. Bureau of Materials, Testing and Research.

Harvard

Dahir S., Henry J. and Meyer W. (1979). Seasonal skid resistance variations. Harrisburg, PA: Pennsylvania Department of Transportation. Bureau of Materials, Testing and Research.

MLA

Dahir SH, Henry JJ and Meyer WE. Seasonal skid resistance variations. Harrisburg, PA: Pennsylvania Department of Transportation. Bureau of Materials, Testing and Research. 1979.