Loehlin, J. C. (1975). Race Differences in Intelligence. W.H. Freeman.
Cita Chicago (17th ed.)Loehlin, John C. Race Differences in Intelligence. San francisco: W.H. Freeman, 1975.
Cita MLA (9th ed.)Loehlin, John C. Race Differences in Intelligence. W.H. Freeman, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.