O'Neill, J. J., & Oyer, H. J. (1961). Visual communication for the hard of hearing: History, research, methods. Prentice-Hall.
Chicago Style (17th ed.) CitationO'Neill, John Joseph, and Herbert J. Oyer. Visual Communication for the Hard of Hearing: History, Research, Methods. Englewood Cliffs, NJ: Prentice-Hall, 1961.
MLA (9th ed.) CitationO'Neill, John Joseph, and Herbert J. Oyer. Visual Communication for the Hard of Hearing: History, Research, Methods. Prentice-Hall, 1961.
Warning: These citations may not always be 100% accurate.