Frost, J. Perilous adventures by land and sea: In Europe, Asia, Africa and America. International Book Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrost, John. Perilous Adventures by Land and Sea: In Europe, Asia, Africa and America. New York: International Book Co..
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrost, John. Perilous Adventures by Land and Sea: In Europe, Asia, Africa and America. International Book Co..
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