Lillard, Paula Polk. Montessori, a modern approach. - New York, Schocken Books [1972] - xvii, 174 p. illus. 21 cm. Bibliography: p. 168-170. ISBN: 0805234233 Source: $6.95 LCCN: 78163334 Subjects--Topical Terms: Montessori method of education. LC Class. No.: LB 775.M8 / L54