APA
The Asphalt Institute, The Asphalt Institute U., . (1981). Sampling Asphalt Products for Specifications Compliance. Asphalt Institute Building College Park Maryland USA: The Asphalt Institute.
Chicago
The Asphalt Institute, The Asphalt Institute USA, . 1981. Sampling Asphalt Products for Specifications Compliance. Asphalt Institute Building College Park Maryland USA: The Asphalt Institute.
Harvard
The Asphalt Institute, The Asphalt Institute U., . (1981). Sampling Asphalt Products for Specifications Compliance. Asphalt Institute Building College Park Maryland USA: The Asphalt Institute.
MLA
The Asphalt Institute, The Asphalt Institute USA, . Sampling Asphalt Products for Specifications Compliance. Asphalt Institute Building College Park Maryland USA: The Asphalt Institute. 1981.