Kahan, M. An Optical Believe It or Not: Key Lessons Learned. SPIE Digital Library.
Cita Chicago (17th ed.)Kahan, Mark. An Optical Believe It or Not: Key Lessons Learned. SPIE Digital Library.
Cita MLA (9th ed.)Kahan, Mark. An Optical Believe It or Not: Key Lessons Learned. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.