R.R. Bowker Company. Ulrich's International Periodicals Directory. Twenty-third Edition 1984. vol. 2 n-z. R.R Bowker Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रR.R. Bowker Company. Ulrich's International Periodicals Directory. Twenty-third Edition 1984. Vol. 2 N-z. Nueva York: R.R Bowker Company.
एमएलए (9वां संस्करण) प्रशस्ति पत्रR.R. Bowker Company. Ulrich's International Periodicals Directory. Twenty-third Edition 1984. Vol. 2 N-z. R.R Bowker Company.
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