APA (7th ed.) Citation

Society of Photo-optical Instrumentation Engineers, Barnes, W. L., & Butler, J. J. (2004). Earth observing systems IX: 2, 4-6 August 2004, Denver, Colorado, USA. SPIE.

Chicago Style (17th ed.) Citation

Society of Photo-optical Instrumentation Engineers, William L. Barnes, and James J. Butler. Earth Observing Systems IX: 2, 4-6 August 2004, Denver, Colorado, USA. Bellingham, Washington: SPIE, 2004.

MLA (9th ed.) Citation

Society of Photo-optical Instrumentation Engineers, et al. Earth Observing Systems IX: 2, 4-6 August 2004, Denver, Colorado, USA. SPIE, 2004.