APA Citation

Hartmann, K. (1979). Polen heute. Berlin: Duncker & Humblot.

Chicago Style Citation

Hartmann, Karl. Polen Heute. Berlin: Duncker & Humblot, 1979.

MLA Citation

Hartmann, Karl. Polen Heute. Berlin: Duncker & Humblot, 1979.

Warning: These citations may not always be 100% accurate.