APA (7th ed.) Citation

Butter, E. (1983). Test your IQ. Pan Book.

Chicago Style (17th ed.) Citation

Butter, Eamonn. Test Your IQ. London: Pan Book, 1983.

MLA (8th ed.) Citation

Butter, Eamonn. Test Your IQ. Pan Book, 1983.

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