Cita APA (7a ed.)

Montessori, M., & Orem, R. C. (1965). A Montessori handbook: "Dr. Montessori's own handbook.". Putnam.

Cita Chicago Style (17a ed.)

Montessori, Maria, y Reginald Calvert Orem. A Montessori Handbook: "Dr. Montessori's Own Handbook.". New York: Putnam, 1965.

Cita MLA (9a ed.)

Montessori, Maria, y Reginald Calvert Orem. A Montessori Handbook: "Dr. Montessori's Own Handbook.". Putnam, 1965.