APA

National Institute for Physical Planning and Construction. Technical Digest Series 12, . (1983). Road transportation and safety. Dublin: National Institute for Physical Planning and Construction. Technical Digest Series 12.

Chicago

National Institute for Physical Planning and Construction. Technical Digest Series 12, . 1983. Road transportation and safety. Dublin: National Institute for Physical Planning and Construction. Technical Digest Series 12.

Harvard

National Institute for Physical Planning and Construction. Technical Digest Series 12, . (1983). Road transportation and safety. Dublin: National Institute for Physical Planning and Construction. Technical Digest Series 12.

MLA

National Institute for Physical Planning and Construction. Technical Digest Series 12, . Road transportation and safety. Dublin: National Institute for Physical Planning and Construction. Technical Digest Series 12. 1983.