APA

The Public Roads Administration. The Building, Research Institute. Asphalt Plant Crushing Plant & Concrete Factory. Aggregates Committee. (1990). Aggregates for pavements. Reykjavik: The Public Roads Administration. The Building.

Chicago

The Public Roads Administration. The Building, Research Institute. Asphalt Plant Crushing Plant and Concrete Factory. Aggregates Committee. 1990. Aggregates for pavements. Reykjavik: The Public Roads Administration. The Building.

Harvard

The Public Roads Administration. The Building, Research Institute. Asphalt Plant Crushing Plant and Concrete Factory. Aggregates Committee. (1990). Aggregates for pavements. Reykjavik: The Public Roads Administration. The Building.

MLA

The Public Roads Administration. The Building, Research Institute. Asphalt Plant Crushing Plant and Concrete Factory. Aggregates Committee. Aggregates for pavements. Reykjavik: The Public Roads Administration. The Building. 1990.