Jain, V. (1995). O`Level module II section- B software packages. BPB.
Lua i Stíl Chicago (17ú heag.)Jain, V. O`Level Module II Section- B Software Packages. New Delhi: BPB, 1995.
Lua MLA (9ú heag.)Jain, V. O`Level Module II Section- B Software Packages. BPB, 1995.
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