APA (7th ed.) Citation

Butler & Pirie. (1990). Boost your IQ. Pan Books.

Chicago Style (17th ed.) Citation

Butler and Pirie. Boost Your IQ. Oxford: Pan Books, 1990.

MLA (8th ed.) Citation

Butler and Pirie. Boost Your IQ. Pan Books, 1990.

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