Não informado. (1972). Library journal/school library journal previews. R.R. Bowker Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Library Journal/school Library Journal Previews. New York: R.R. Bowker Company, 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Library Journal/school Library Journal Previews. R.R. Bowker Company, 1972.
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