APA (7th ed.) Citation

Wirth, G. (1987). Heinrich Grüber. Union-Verl.

Chicago Style (17th ed.) Citation

Wirth, Günter. Heinrich Grüber. Berlin: Union-Verl, 1987.

MLA (8th ed.) Citation

Wirth, Günter. Heinrich Grüber. Union-Verl, 1987.

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