Modak, S. (1993). Human orientation: Science and avt. Sumitra.
Lua i Stíl Chicago (17ú heag.)Modak, S. Human Orientation: Science and Avt. Bombay: Sumitra, 1993.
Lua MLA (9ú heag.)Modak, S. Human Orientation: Science and Avt. Sumitra, 1993.
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