APA (7th ed.) Citation

Klengel-Brandt, E., & Marzahn, J. (1983). Sumer (o.A.). o.A..

Chicago Style (17th ed.) Citation

Klengel-Brandt, E., and J. Marzahn. Sumer. o.A. Berlin: o.A., 1983.

MLA (8th ed.) Citation

Klengel-Brandt, E., and J. Marzahn. Sumer. o.A. o.A., 1983.