Montessori, M., & Buckenmeyer, R. G. (1997). The California lectures of Maria Montessori: Collected speeches and writings. Clio Press.
Lua i Stíl Chicago (17ú heag.)Montessori, Maria, agus Robert G. Buckenmeyer. The California Lectures of Maria Montessori: Collected Speeches and Writings. Oxford, Eng: Clio Press, 1997.
Lua MLA (9ú heag.)Montessori, Maria, agus Robert G. Buckenmeyer. The California Lectures of Maria Montessori: Collected Speeches and Writings. Clio Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.