Gaya APA
Lefond, Staley J.. (1975).
Industrial minerals and rocks : nonmetallics other than fuels (4th ed).
New York:
American Institute of Mining, Metallurgical, and Petroleum Engineers.
Gaya Chicago
Lefond, Staley J..
Industrial minerals and rocks : nonmetallics other than fuels.
4th ed
New York:
American Institute of Mining, Metallurgical, and Petroleum Engineers,
1975.
Text.
Gaya MLA
Lefond, Staley J..
Industrial minerals and rocks : nonmetallics other than fuels.
4th ed
New York:
American Institute of Mining, Metallurgical, and Petroleum Engineers,
1975.
Text.
Gaya Turabian
Lefond, Staley J..
Industrial minerals and rocks : nonmetallics other than fuels.
4th ed
New York:
American Institute of Mining, Metallurgical, and Petroleum Engineers,
1975.
Print.