APA (7th ed.) Citation

Haas, K. B., & Packer, H. Q. (1950). Preparation and use of audio-visual aids. Prentice-Hall.

Chicago Style (17th ed.) Citation

Haas, Kenneth Brooks, and Harry Q. Packer. Preparation and Use of Audio-visual Aids. New York: Prentice-Hall, 1950.

MLA (9th ed.) Citation

Haas, Kenneth Brooks, and Harry Q. Packer. Preparation and Use of Audio-visual Aids. Prentice-Hall, 1950.