Irwin, J. V., & Marge, M. (1972). Principles of childhood language disabilities. Appleton-Century-Crofts.
Citazione stile Chigago Style (17a edizione)Irwin, John V., e Michael Marge. Principles of Childhood Language Disabilities. New York: Appleton-Century-Crofts, 1972.
Citatione MLA (8a ed.)Irwin, John V., e Michael Marge. Principles of Childhood Language Disabilities. Appleton-Century-Crofts, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.