Lua APA (7ú heag.)
Hajra Choudhury, S. K., & Hajra Choudhury, A. K. (2001). Elements of workshop technology (11th ed.). Media Promoters.
Lua i Stíl Chicago (17ú heag.)
Hajra Choudhury, S. K., agus A. K/Roy Hajra Choudhury. Elements of Workshop Technology. 11th ed. Mumbai: Media Promoters, 2001.
Lua MLA (9ú heag.)
Hajra Choudhury, S. K., agus A. K/Roy Hajra Choudhury. Elements of Workshop Technology. 11th ed. Media Promoters, 2001.
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