Singh, A. (2002). Negotiable Instruments: Negotiable instruments act, 1881 (6th ed.). Eastern Book Company.
Lua i Stíl Chicago (17ú heag.)Singh, Avtar. Negotiable Instruments: Negotiable Instruments Act, 1881. 6th ed. Lucknow: Eastern Book Company, 2002.
Lua MLA (8ú heag.)Singh, Avtar. Negotiable Instruments: Negotiable Instruments Act, 1881. 6th ed. Eastern Book Company, 2002.
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