Gaya APA
Hartman, H, L., Mutmansky, J, M. (2002).
Introductory Mining Engineering second edition (Second Edition).
Hoboken:
John Wiley & Sons.
Gaya MLA
Hartman, Howard, L.., Mutmansky, Jan, M..
"Introductory Mining Engineering second edition".
Second Edition
Hoboken:
John Wiley & Sons,
2002.
Text.