APA Style
Crickmer, Douglas F., Zegeer, David A.. (1981).
ELEMENTS OF PRACTICAL COAL MINING, 2nd Edition (2nd).
United States of America:
The American Institute of Mining, Mettalurgical, and Petroleum Engineers, Inc.
Chicago Style
Crickmer, Douglas F., Zegeer, David A..
ELEMENTS OF PRACTICAL COAL MINING, 2nd Edition.
2nd
United States of America:
The American Institute of Mining, Mettalurgical, and Petroleum Engineers, Inc,
1981.
Text.
MLA Style
Crickmer, Douglas F., Zegeer, David A..
ELEMENTS OF PRACTICAL COAL MINING, 2nd Edition.
2nd
United States of America:
The American Institute of Mining, Mettalurgical, and Petroleum Engineers, Inc,
1981.
Text.
Turabian Style
Crickmer, Douglas F., Zegeer, David A..
ELEMENTS OF PRACTICAL COAL MINING, 2nd Edition.
2nd
United States of America:
The American Institute of Mining, Mettalurgical, and Petroleum Engineers, Inc,
1981.
Print.