Peele, R. Mining engineers handbook.
Lua i Stíl Chicago (17ú heag.)Peele, Robert. Mining Engineers Handbook.
Lua MLA (8ú heag.)Peele, Robert. Mining Engineers Handbook.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)