Singh, P. B. (2000). Galgotia's objective chemistry for competitive examinations: P.B. Singh. Galgotia Publications.
Chicago-čujuhus (17. p.)Singh, P. B. Galgotia's Objective Chemistry for Competitive Examinations: P.B. Singh. New Delhi: Galgotia Publications, 2000.
MLA-čujuhus (9. p.)Singh, P. B. Galgotia's Objective Chemistry for Competitive Examinations: P.B. Singh. Galgotia Publications, 2000.
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