APA (7th ed.) Citation

Irwin, J. V., & Marge, M. (1972). Principles of childhood language disabilities. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Irwin, John V., and Michael Marge. Principles of Childhood Language Disabilities. New York: Appleton-Century-Crofts, 1972.

MLA (9th ed.) Citation

Irwin, John V., and Michael Marge. Principles of Childhood Language Disabilities. Appleton-Century-Crofts, 1972.