Sagan, S. Optical Scanning 2002. SPIE Digital Library.
Cita Chicago (17th ed.)Sagan, Stephen. Optical Scanning 2002. SPIE Digital Library.
Cita MLA (9th ed.)Sagan, Stephen. Optical Scanning 2002. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.