Singh, P. (1991). The Neolithic origins. Agam Kala.
Chicago-čujuhus (17. p.)Singh, Purushottam. The Neolithic Origins. Delhi: Agam Kala, 1991.
MLA-čujuhus (9. p.)Singh, Purushottam. The Neolithic Origins. Agam Kala, 1991.
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