Drum, B., & Verriest, G. (1988). Colour Vision Deficiencies IX: Proceedings of the ninth symposium of the International Research Group on Colour Vision Deficiencies, held at St. John's College, Annapolis, Maryland, U.S.A., 1-3 July 1987. Springer Netherlands.
Chicago Style (17th ed.) CitationDrum, B., and G. Verriest. Colour Vision Deficiencies IX: Proceedings of the Ninth Symposium of the International Research Group on Colour Vision Deficiencies, Held at St. John's College, Annapolis, Maryland, U.S.A., 1-3 July 1987. Dordrecht: Springer Netherlands, 1988.
MLA (9th ed.) CitationDrum, B., and G. Verriest. Colour Vision Deficiencies IX: Proceedings of the Ninth Symposium of the International Research Group on Colour Vision Deficiencies, Held at St. John's College, Annapolis, Maryland, U.S.A., 1-3 July 1987. Springer Netherlands, 1988.