APA

Transportation Research Board, . (1979). Investigation and development of materials resources. Washington DC: Transportation Technology Support for Developing Countries. Compendium 6.

Chicago

Transportation Research Board, . 1979. Investigation and development of materials resources. Washington DC: Transportation Technology Support for Developing Countries. Compendium 6.

Harvard

Transportation Research Board, . (1979). Investigation and development of materials resources. Washington DC: Transportation Technology Support for Developing Countries. Compendium 6.

MLA

Transportation Research Board, . Investigation and development of materials resources. Washington DC: Transportation Technology Support for Developing Countries. Compendium 6. 1979.