APA

Irwin J. V., Marge Michael, . (1972). Principles of childhood language disabilities. New York: Appleton-Century-Crofts.

Chicago

Irwin John V, Marge Michael, . 1972. Principles of childhood language disabilities. New York: Appleton-Century-Crofts.

Harvard

Irwin J. V., Marge Michael, . (1972). Principles of childhood language disabilities. New York: Appleton-Century-Crofts.

MLA

Irwin John V, Marge Michael, . Principles of childhood language disabilities. New York: Appleton-Century-Crofts. 1972.