APA (7th ed.) Citation

Lapp, P. J. (2013). Grenzregime der DDR. Helios.

Chicago Style (17th ed.) Citation

Lapp, Peter Joachim. Grenzregime Der DDR. Aachen: Helios, 2013.

MLA (8th ed.) Citation

Lapp, Peter Joachim. Grenzregime Der DDR. Helios, 2013.

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