Cita APA (7th ed.)

Riley, P. D. (2004). 100 things you should know about planet earth. Miles Kelly Publishing.

Cita Chicago (17th ed.)

Riley, Peter D. 100 Things You Should Know About Planet Earth. Bardifield, Essex: Miles Kelly Publishing, 2004.

Cita MLA (9th ed.)

Riley, Peter D. 100 Things You Should Know About Planet Earth. Miles Kelly Publishing, 2004.