APA (7th ed.) Citation

Wium, D. J. W. (1972). Code of practice: Traffic control during research operations on public roads. National Institute for Road Research.

Chicago Style (17th ed.) Citation

Wium, D. J. W. Code of Practice: Traffic Control During Research Operations on Public Roads. Pretoria, South Africa: National Institute for Road Research, 1972.

MLA (9th ed.) Citation

Wium, D. J. W. Code of Practice: Traffic Control During Research Operations on Public Roads. National Institute for Road Research, 1972.