Cita APA (7a ed.)

Lillard, P. P. (1972). Montessori, a modern approach. Schocken Books.

Cita Chicago Style (17a ed.)

Lillard, Paula Polk. Montessori, a Modern Approach. New York: Schocken Books, 1972.

Cita MLA (9a ed.)

Lillard, Paula Polk. Montessori, a Modern Approach. Schocken Books, 1972.