APA (7th ed.) Citation

Firth. (2006). First encyclopedia of science. Usborne Pub.

Chicago Style (17th ed.) Citation

Firth. First Encyclopedia of Science. London: Usborne Pub, 2006.

MLA (8th ed.) Citation

Firth. First Encyclopedia of Science. Usborne Pub, 2006.

Warning: These citations may not always be 100% accurate.