Schneider-Blum n.d.

Schneider-Blum, Gertrud. n.d. [Data supplied by Gertrud Schneider-Blum]; Schneider-Blum, Gertrud. 2013. A Tima-English Dictionary: An illustrated lexicon of a Niger-Congo language spoken in the Nuba Mountains (Nuba). Cologne: Köppe.

@misc{9053,
  author = {Schneider-Blum, Gertrud},
  title  = {[Data supplied by Gertrud Schneider-Blum]; Schneider-Blum, Gertrud. 2013. A Tima-English Dictionary: An illustrated lexicon of a Niger-Congo language spoken in the Nuba Mountains (Nuba). Cologne: Köppe.},
  year   = {n.d.}
}