Hemphill, G. B. (1981). Blasting Operations Gary B. Hemphill. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Hemphill, Gary B. Blasting Operations Gary B. Hemphill. McGraw-Hill, 1981.
Lua MLA (8ú heag.)Hemphill, Gary B. Blasting Operations Gary B. Hemphill. McGraw-Hill, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.