@book{117664,
	author = {Chevreul, M. E. and Spanton, John},
	title = {The laws of contrast of colour},
	publisher = {Project Gutenberg,},
	year = {2025},
	address = {Salt Lake City, UT :},
	edition = {New [third?] edition},
	note = {Release date is 2025-09-27},
	url = {https://archive.org/details/lawsofcontrastof00chev/page/n5/mode/2up}
}