Pap, J. M., Frohlich, C., Hudson, H. S., & Tobiska, W. K. (1994). The Sun as a Variable Star: Solar and Stellar Irradiance Variations: Proceedings of the 143rd Colloquium of the International Astronomical Union held in the Clarion Harvest House, Boulder, Colorado, June 20-25, 1993. Springer Netherlands.
Chicago Style (17th ed.) CitationPap, Judit M., Claus Frohlich, Hugh S. Hudson, and W. Kent Tobiska. The Sun as a Variable Star: Solar and Stellar Irradiance Variations: Proceedings of the 143rd Colloquium of the International Astronomical Union Held in the Clarion Harvest House, Boulder, Colorado, June 20-25, 1993. Dordrecht: Springer Netherlands, 1994.
MLA (9th ed.) CitationPap, Judit M., et al. The Sun as a Variable Star: Solar and Stellar Irradiance Variations: Proceedings of the 143rd Colloquium of the International Astronomical Union Held in the Clarion Harvest House, Boulder, Colorado, June 20-25, 1993. Springer Netherlands, 1994.