Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Thorning Christensen, P. (1998). The Fortifications of Copenhagen A Guide to 900 years of fortifications history. The Ministry of the Environment and EnergyThe National Forest and Nature Agency.

Chicago Citation Edition Citation

Thorning Christensen, Peter. The Fortifications of Copenhagen A Guide to 900 Years of Fortifications History. Copenhagen: The Ministry of the Environment and EnergyThe National Forest and Nature Agency, 1998.

MLA Citation Edition Citation

Thorning Christensen, Peter. The Fortifications of Copenhagen A Guide to 900 Years of Fortifications History. The Ministry of the Environment and EnergyThe National Forest and Nature Agency, 1998.