Jain, V. (1995). `O`Level module IV: Problem solving in Basic. BPB.
Chicago Style aipamenaJain, V. `O`Level Module IV: Problem Solving in Basic. New Delhi: BPB, 1995.
MLA aipamenaJain, V. `O`Level Module IV: Problem Solving in Basic. BPB, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.