Gentry, G., & Westbury, E. T. (1966). Hardening and tempering engineers' tools (3rd ed.). Model and Allied Publications.
Chicago Style (17th ed.) CitationGentry, George, and Edgar T. Westbury. Hardening and Tempering Engineers' Tools. 3rd ed. Kings Langley: Model and Allied Publications, 1966.
MLA (9th ed.) CitationGentry, George, and Edgar T. Westbury. Hardening and Tempering Engineers' Tools. 3rd ed. Model and Allied Publications, 1966.
Warning: These citations may not always be 100% accurate.