G. Berthier, J. Serre (1966). "General and Theoretical Aspects of the Carbonyl Group". Dalam Saul Patai (penyunting). The Carbonyl Group. PATAI'S Chemistry of Functional Groups. 1. John Wiley & Sons. m/s. 1–77. doi:10.1002/9780470771051.ch1. ISBN9780470771051.