Singh, A. K. (2008). Science and technology for civil services examinations. Tata Mc-Graw Hill.
Chicago-стиль цитированияSingh, Ashok Kumar. Science and Technology for Civil Services Examinations. New Delhi: Tata Mc-Graw Hill, 2008.
MLA-цитированиеSingh, Ashok Kumar. Science and Technology for Civil Services Examinations. Tata Mc-Graw Hill, 2008.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.