Holt, J. (1975). How children learn. Penguin.
Cita Chicago (17th ed.)Holt, John. How Children Learn. Harmondsworth: Penguin, 1975.
Cita MLA (9th ed.)Holt, John. How Children Learn. Penguin, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.