Selby, C. D., Vaughan, H. F., Briston, L. D., Drinker, P., Hazlett, T. L., & Neal, P. A. (1941). Educational Qualifications of Industrial Hygienists: Report of the Subcommittee on the Educational Qualifications of Industrial Hygienists.

Selby, Clarence D., Henry F. Vaughan, Leverett D. Briston, Philip Drinker, T. Lyle Hazlett, και Paul A. Neal. Educational Qualifications of Industrial Hygienists: Report of the Subcommittee On the Educational Qualifications of Industrial Hygienists. 1941.

Selby, Clarence D., et al. Educational Qualifications of Industrial Hygienists: Report of the Subcommittee On the Educational Qualifications of Industrial Hygienists. 1941.