APA (7th ed.) Citation

Hooker, A. B., & Ilsley, L. C. (1928). Permissible single-shot blasting units. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Hooker, A. B., and L. C. Ilsley. Permissible Single-shot Blasting Units. [Washington?]: U.S. Government Printing Office, 1928.

MLA (9th ed.) Citation

Hooker, A. B., and L. C. Ilsley. Permissible Single-shot Blasting Units. U.S. Government Printing Office, 1928.