APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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