Cita APA (7th ed.)

Hechinger, F. M. (1966). Pre-school education today: New approaches to teaching three-, four-, and five-year-olds. Doubleday.

Cita Chicago (17th ed.)

Hechinger, Fred M. Pre-school Education Today: New Approaches to Teaching Three-, Four-, and Five-year-olds. Garden City, N.Y: Doubleday, 1966.

Cita MLA (9th ed.)

Hechinger, Fred M. Pre-school Education Today: New Approaches to Teaching Three-, Four-, and Five-year-olds. Doubleday, 1966.

Atenció: Aquestes cites poden no estar 100% correctes.