@article{PPN597844887+DMDLOG_0009, title = {Abbildung.}, booktitle = {Die Elementar-Geometrie Bd. 1,3}, series = {GDML\_Books}, publisher = {Dalp}, address = {Leipzig}, year = {1839}, pages = {157}, url = {http://dml.mathdoc.fr/item/PPN597844887+DMDLOG_0009} }
(éd.). Abbildung., dans Die Elementar-Geometrie Bd. 1,3, GDML_Books, (1839), p. 157. http://gdmltest.u-ga.fr/item/PPN597844887+DMDLOG_0009/