TALWAR , M. &. G. P. (1997). LIGHT & COLOUR: KNOW ABOUT SCIENCE SERIES.
Cita Chicago (17th ed.)TALWAR , M.L & GUPTA P. LIGHT & COLOUR: KNOW ABOUT SCIENCE SERIES. 1997.
Cita MLA (9th ed.)TALWAR , M.L & GUPTA P. LIGHT & COLOUR: KNOW ABOUT SCIENCE SERIES. 1997.
Atenció: Aquestes cites poden no estar 100% correctes.