Chattopadhyaya, S. (1980). The periplus of the Erythrean sea and: Ptolemy on ancient geography of India. Prajna.
Chicago-viite (17. p.)Chattopadhyaya, Sudhakar. The Periplus of the Erythrean Sea and: Ptolemy on Ancient Geography of India. Calcutta: Prajna, 1980.
MLA-viite (9. p.)Chattopadhyaya, Sudhakar. The Periplus of the Erythrean Sea and: Ptolemy on Ancient Geography of India. Prajna, 1980.
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