Gaya APA

Jr, M, M, M. (1956). Montessori Principles: The Human Tendencies and Montessori Education . Amsterdam, Netherlands: Association Montessori Internationale (AMI).

Gaya MLA

Jr, Mario, M, Montessori. "Montessori Principles: The Human Tendencies and Montessori Education". Amsterdam, Netherlands: Association Montessori Internationale (AMI), 1956. Text.