Lovell, D. Optical Anecdotes. SPIE Digital Library.
Cita Chicago (17th ed.)Lovell, D.J. Optical Anecdotes. SPIE Digital Library.
Cita MLA (9th ed.)Lovell, D.J. Optical Anecdotes. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.