Singh, A. (1986). Law of Involvency. Eastern Book co. Lacknow.
Chicago-čujuhus (17. p.)Singh, Avtar. Law of Involvency. Lucknow: Eastern Book co. Lacknow, 1986.
MLA-čujuhus (9. p.)Singh, Avtar. Law of Involvency. Eastern Book co. Lacknow, 1986.
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