Lua APA (7ú heag.)
Hartman, H. L. (2002). Introductory Mining Engineering (2nd ed.). John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)
Hartman, Howard L. Introductory Mining Engineering. 2nd ed. New e Jersey: John Wiley & Sons, 2002.
Lua MLA (9ú heag.)
Hartman, Howard L. Introductory Mining Engineering. 2nd ed. John Wiley & Sons, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.