APA (7th ed.) Citation
Challen, P. J. R. (1965). Health and safety in welding and allied processes (2a.ed.). The Institute of Welding.
Chicago Style (17th ed.) Citation
Challen, Peter J. R. Health and Safety in Welding and Allied Processes. 2a.ed. London: The Institute of Welding, 1965.
MLA (9th ed.) Citation
Challen, Peter J. R. Health and Safety in Welding and Allied Processes. 2a.ed. The Institute of Welding, 1965.
Warning: These citations may not always be 100% accurate.