APA

Anderson V. E., Gruhn W. T., . (1962). Principles and practices of secondary education. New York: Ronald Press.

Chicago

Anderson Vernon Ellsworth, Gruhn William Theodore, . 1962. Principles and practices of secondary education. New York: Ronald Press.

Harvard

Anderson V. E., Gruhn W. T., . (1962). Principles and practices of secondary education. New York: Ronald Press.

MLA

Anderson Vernon Ellsworth, Gruhn William Theodore, . Principles and practices of secondary education. New York: Ronald Press. 1962.