SINGH SUNIL KUMAR. (2022). LUCENT'S SAMANYA GYAN GK (2022.). LUCENT PUBLISHING HOUSE.
Chicago-čujuhus (17. p.)SINGH SUNIL KUMAR. LUCENT'S SAMANYA GYAN GK. 2022. PATNA: LUCENT PUBLISHING HOUSE, 2022.
MLA-čujuhus (9. p.)SINGH SUNIL KUMAR. LUCENT'S SAMANYA GYAN GK. 2022. LUCENT PUBLISHING HOUSE, 2022.
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