Ravi, N. (2002). The Hindu speaks on scientific facts. kasturi & sons.
Cita Chicago (17th ed.)Ravi, N. The Hindu Speaks on Scientific Facts. Chennai: kasturi & sons, 2002.
Cita MLA (9th ed.)Ravi, N. The Hindu Speaks on Scientific Facts. kasturi & sons, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.