Singh,Ashok Kumar. (2008). Science & Technology for civil services Examinations. Tata McGraw-Hill.
Chicago ZitierstilSingh,Ashok Kumar. Science & Technology for Civil Services Examinations. New Delhi: Tata McGraw-Hill, 2008.
MLA ZitierstilSingh,Ashok Kumar. Science & Technology for Civil Services Examinations. Tata McGraw-Hill, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.