Gaya APA

Twist, C. (1997). Encyclopedia of Scince 9 Fuel and Power : Energy Sources, Engines, and Rockets . New York: Macmillan.

Gaya MLA

Twist, Clint. "Encyclopedia of Scince 9 Fuel and Power : Energy Sources, Engines, and Rockets". New York: Macmillan, 1997. Text.