Gaya APA
Flores, R, M.
(2014).
COAL AND COALBED GAS FUELING THE FUTURE (E-Book)
.
San Diego:
Elsevier.
Gaya MLA
Flores, Romeo, M..
"COAL AND COALBED GAS FUELING THE FUTURE (E-Book)".
San Diego:
Elsevier,
2014.
Text.