APA
, . (1993). Chemistry Question Papers with Their answers XII. Delhi: Satish & Brothers.
Chicago
, . 1993. Chemistry Question Papers with Their answers XII. Delhi: Satish & Brothers.
Harvard
, . (1993). Chemistry Question Papers with Their answers XII. Delhi: Satish & Brothers.
MLA
, . Chemistry Question Papers with Their answers XII. Delhi: Satish & Brothers. 1993.