(1980). IQ exercises / Kevin Leman, Elaine Hardt.
Cita Chicago (17th ed.)IQ Exercises / Kevin Leman, Elaine Hardt. 1980.
Cita MLA (9th ed.)IQ Exercises / Kevin Leman, Elaine Hardt. 1980.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)