Gaya APA
Kerrod, R.
(1997).
Enclycopedia Of Science Fuel and Power 9
.
U.SA:
Macmillan Library Reference.
Gaya MLA
Kerrod, Robbin.
"Enclycopedia Of Science Fuel and Power 9".
U.SA:
Macmillan Library Reference,
1997.
Text.