Slobodkina, E. (1947). Caps for sale: A tale of a peddler, some monkeys & their monkey business. W. R. Scott.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSlobodkina, Esphyr. Caps for Sale: A Tale of a Peddler, Some Monkeys & Their Monkey Business. New York: W. R. Scott, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSlobodkina, Esphyr. Caps for Sale: A Tale of a Peddler, Some Monkeys & Their Monkey Business. W. R. Scott, 1947.
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