@book{3068,
	author = {Armstrong, Helen},
	title = {Graphic design theory},
	publisher = {Princeton Architectural Press},
	year = {2009},
	address = {New York},
	url = {https://libgen.is/book/index.php?md5=94100D8D148E2AE5DDBE0D96C9B3C06F}
}