Gaya APA
Hartman, Howard L.. (1987).
Introductory Mining Engineering .
Tuscaloosa:
John Wiley & Sons.
Gaya Chicago
Hartman, Howard L..
Introductory Mining Engineering.
Tuscaloosa:
John Wiley & Sons,
1987.
Text.
Gaya MLA
Hartman, Howard L..
Introductory Mining Engineering.
Tuscaloosa:
John Wiley & Sons,
1987.
Text.
Gaya Turabian
Hartman, Howard L..
Introductory Mining Engineering.
Tuscaloosa:
John Wiley & Sons,
1987.
Print.