Gregory, G. G. Optics Education and Outreach IV. SPIE Digital Library.
Cita Chicago (17th ed.)Gregory, G. Groot. Optics Education and Outreach IV. SPIE Digital Library.
Cita MLA (8th ed.)Gregory, G. Groot. Optics Education and Outreach IV. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.