APA Style
Billings, Roger E.. (1983).
Hydrogen from Coal: A Cost Estimation Guidebook .
Oklahoma:
PennWell Books.
Chicago Style
Billings, Roger E..
Hydrogen from Coal: A Cost Estimation Guidebook.
Oklahoma:
PennWell Books,
1983.
Text.
MLA Style
Billings, Roger E..
Hydrogen from Coal: A Cost Estimation Guidebook.
Oklahoma:
PennWell Books,
1983.
Text.
Turabian Style
Billings, Roger E..
Hydrogen from Coal: A Cost Estimation Guidebook.
Oklahoma:
PennWell Books,
1983.
Print.