Roybal, W. Advanced Telescope Design, Fabrication, and Control. SPIE Digital Library.
Cita Chicago (17th ed.)Roybal, William. Advanced Telescope Design, Fabrication, and Control. SPIE Digital Library.
Cita MLA (9th ed.)Roybal, William. Advanced Telescope Design, Fabrication, and Control. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.