APA (7th ed.) Citation

Gray, T. W., Barker, D. G., Clark, F. E., & Dennis, M. E. (1979). Development of a safety program for the retail employees of the liquified petroleum gas industry /. Gray.

Chicago Style (17th ed.) Citation

Gray, Troy Wendell, Donald G. Barker, Francis E. Clark, and Maurice E. Dennis. Development of a Safety Program for the Retail Employees of the Liquified Petroleum Gas Industry /. [College Station, Tex.]: Gray, 1979.

MLA (9th ed.) Citation

Gray, Troy Wendell, et al. Development of a Safety Program for the Retail Employees of the Liquified Petroleum Gas Industry /. Gray, 1979.