@book{100570,
	author = {Pannekoek, Anton,},
	title = {De Wonderbouw der Wereld},
	publisher = {Project Gutenberg,},
	year = {2019},
	address = {Salt Lake City, UT :},
	note = {Release date is 2019-06-12},
	url = {https://www.gutenberg.org/ebooks/59744}
}