Greenler, R. Rainbows, Halos, and Glories. SPIE Digital Library.
Cita Chicago (17th ed.)Greenler, Robert. Rainbows, Halos, and Glories. SPIE Digital Library.
Cita MLA (9th ed.)Greenler, Robert. Rainbows, Halos, and Glories. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.