Citazione Stile APA (7a Edizione)

Evensen, R. H., & Levering, M. B. (1979). Blind and Physically Handicapped: Services are 500 Percent Better.

Citazione stile Chigago Style (17a edizione)

Evensen, Richard H., e Mary Berghaus Levering. Blind and Physically Handicapped: Services Are 500 Percent Better. 1979.

Citatione MLA (9a ed.)

Evensen, Richard H., e Mary Berghaus Levering. Blind and Physically Handicapped: Services Are 500 Percent Better. 1979.