Elementa trigonometriæ Planæ. Præfatio.
Qui Commentationem de Methodo Mathematica, Arithmeticam, Geometriam, Trigonometriam Planam, et Analysim, tam Finitorum quam Infinitorum complectitur Tomus 1, GDML_Books, (1743), p. 211 / Harvested from
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     title = {Elementa trigonometri\ae\ Plan\ae . Pr\ae fatio.},
     booktitle = {Qui Commentationem de Methodo Mathematica, Arithmeticam, Geometriam, Trigonometriam Planam, et Analysim, tam Finitorum quam Infinitorum complectitur Tomus 1},
     series = {GDML\_Books},
     publisher = {Gosse},
     address = {Genevae},
     year = {1743},
     pages = {211},
     url = {http://dml.mathdoc.fr/item/PPN58877524X+DMDLOG_0013}
}

 (éd.). Elementa trigonometriæ Planæ. Præfatio., dans Qui Commentationem de Methodo Mathematica, Arithmeticam, Geometriam, Trigonometriam Planam, et Analysim, tam Finitorum quam Infinitorum complectitur Tomus 1, GDML_Books,  (1743), p. 211. http://gdmltest.u-ga.fr/item/PPN58877524X+DMDLOG_0013/