Citazione Stile APA (7a Edizione)

Gentry, N. D., & Parks, A. L. (1977). Education of the severely/profoundly handicapped: What is the least restrictive alternative? Learning Concepts.

Citazione stile Chigago Style (17a edizione)

Gentry, N. Dale, e A. Lee Parks. Education of the Severely/profoundly Handicapped: What Is the Least Restrictive Alternative? Austin, Tex.: Learning Concepts, 1977.

Citatione MLA (8a ed.)

Gentry, N. Dale, e A. Lee Parks. Education of the Severely/profoundly Handicapped: What Is the Least Restrictive Alternative? Learning Concepts, 1977.