Gaya APA
Cummins, A, B. (1973).
SME Mining Engineering Handbook, In Two Volumes Vol 2 .
New York:
The American Institute of Mining and Metallurgical Engineers.
Gaya MLA
Cummins, Arthur, B.
"SME Mining Engineering Handbook, In Two Volumes Vol 2".
New York:
The American Institute of Mining and Metallurgical Engineers,
1973.
Text.