@misc{Young_John_Wesley_(1879–1932)_Projective_1930,
 author={Young, John Wesley (1879–1932)},
 copyright={Public Domain},
 address={Chicago},
 journal={The Carus Mathematical Monographs ; 4},
 howpublished={online},
 year={1930},
 publisher={The Open Court Publishing Company},
 language={eng},
 title={Projective geometry},
 type={Text},
 URL={http://rcin.org.pl/impan/Content/13501/PDF/WA35_11701_4212_Projective.pdf},
}