Williams, C. M. (1968). Learning from pictures (2d ed.). Dept. of Audiovisual Instruction, National Education Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliams, Catharine M. Learning from Pictures. 2d ed. Washington: Dept. of Audiovisual Instruction, National Education Association, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWilliams, Catharine M. Learning from Pictures. 2d ed. Dept. of Audiovisual Instruction, National Education Association, 1968.
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