Citazione Stile APA (7a Edizione)

(1972). 1972 Directory of Library Resources for the Blind and Physically Handicapped. Second Revised Edition.

Citazione stile Chigago Style (17a edizione)

1972 Directory of Library Resources for the Blind and Physically Handicapped. Second Revised Edition. 1972.

Citatione MLA (9a ed.)

1972 Directory of Library Resources for the Blind and Physically Handicapped. Second Revised Edition. 1972.