APA

Kandhal P., . (1981). Laboratory evaluation of sulphur extended asphalt paving materials. Harrisburg, PA: Pennsylvania Department of Transportation. Materials and Testing Division.

Chicago

Kandhal PS, . 1981. Laboratory evaluation of sulphur extended asphalt paving materials. Harrisburg, PA: Pennsylvania Department of Transportation. Materials and Testing Division.

Harvard

Kandhal P., . (1981). Laboratory evaluation of sulphur extended asphalt paving materials. Harrisburg, PA: Pennsylvania Department of Transportation. Materials and Testing Division.

MLA

Kandhal PS, . Laboratory evaluation of sulphur extended asphalt paving materials. Harrisburg, PA: Pennsylvania Department of Transportation. Materials and Testing Division. 1981.