Schrift, Letter, Mikrokopie.
APA Citation
Goebel, J., Kleukens, C. H. (Christian Heinrich). (1940). Schrift, Letter, Mikrokopie. [Mainz]: [Druck der Mainzer Presse].
MLA Citation
Goebel, Joe, and C. H. (Christian Heinrich) Kleukens. Schrift, Letter, Mikrokopie. [Mainz]: [Druck der Mainzer Presse], 1940.
Warning: These citations may not always be complete (especially for serials).