Tohutoro APA (7th ed.)
Haas, K. B., & Packer, H. Q. (1955). Preparation and use of audio-visual aids (3d ed.). Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)
Haas, Kenneth Brooks, me Harry Q. Packer. Preparation and Use of Audio-visual Aids. 3d ed. New York: Prentice-Hall, 1955.
Tohutoro MLA (9th ed.)
Haas, Kenneth Brooks, me Harry Q. Packer. Preparation and Use of Audio-visual Aids. 3d ed. Prentice-Hall, 1955.
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