@book{43343,
	author = {Darwin, Charles,},
	title = {The Expression of the Emotions in Man and Animals},
	publisher = {Project Gutenberg,},
	year = {1998},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Expression_of_the_Emotions_in_Man_and_Animals},
	url = {https://www.gutenberg.org/ebooks/1227}
}