Gaya APA

Twist, C., Swanson, C, P. (NULL). Encyclopedia of science 9 fuel and power . New: New York: Macmillan Pub.Co.; 1991.

Gaya MLA

Twist, Clint., Swanson, Carl, P.. "Encyclopedia of science 9 fuel and power". New: New York: Macmillan Pub.Co.; 1991, NULL. Text.