@book{gaden1909,
  address   = {Paris},
  author    = {Gaden, Henri},
  key       = {Gaden (1909)},
  publisher = {Ernest Leroux},
  title     = {Essai de la grammaire de la langue baguirmienne},
  url       = {https://archive.org/details/rosettaproject_bmi_morsyn-1},
  year      = {1909}
}