APA (7th ed.) Citation

Hooker, A. B., & Ilsley, L. C. (1930). Permissible electric mine lamps. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Hooker, A. B., and L. C. Ilsley. Permissible Electric Mine Lamps. [Washington?]: U.S. Government Printing Office, 1930.

MLA (9th ed.) Citation

Hooker, A. B., and L. C. Ilsley. Permissible Electric Mine Lamps. U.S. Government Printing Office, 1930.