Hopkins, Frederick Gowland; Cole, Sydney W. (1901). "On the proteid reaction of Adamkiewicz, with contributions to the chemistry of glyoxylic acid". Proceedings of the Royal Society. 68 (442–450): 21–33. doi:10.1098/rspl.1901.0008.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)