APA (7th ed.) Citation

Helen Keller National Center for Deaf-Blind Youths and Adults. (1987). The world at his fingertips. Filmakers Library.

Chicago Style (17th ed.) Citation

Helen Keller National Center for Deaf-Blind Youths and Adults. The World at His Fingertips. New York, NY: Filmakers Library, 1987.

MLA (9th ed.) Citation

Helen Keller National Center for Deaf-Blind Youths and Adults. The World at His Fingertips. Filmakers Library, 1987.