APA (7th ed.) Citation

Parker, S. (1994). 101 questions and answers: Our planet earth. Hamlyn.

Chicago Style (17th ed.) Citation

Parker, Steve. 101 Questions and Answers: Our Planet Earth. Great Britain: Hamlyn, 1994.

MLA (9th ed.) Citation

Parker, Steve. 101 Questions and Answers: Our Planet Earth. Hamlyn, 1994.