(2009). Astronomical spectrographs and their history / John Hearnshaw.
Cita Chicago (17th ed.)Astronomical Spectrographs and Their History / John Hearnshaw. 2009.
Cita MLA (9th ed.)Astronomical Spectrographs and Their History / John Hearnshaw. 2009.
Atenció: Aquestes cites poden no estar 100% correctes.