Singh, A. K. (2008). Science and technology for civil services examinations. Tata Mc-Graw Hill.
Citação norma ChicagoSingh, Ashok Kumar. Science and Technology for Civil Services Examinations. New Delhi: Tata Mc-Graw Hill, 2008.
Citação norma MLASingh, Ashok Kumar. Science and Technology for Civil Services Examinations. Tata Mc-Graw Hill, 2008.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.