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

APA Citation Edition Citation

Popović, M., & Kavran, O. (1991). The fortress of Belgrade. Institute for the Protection of Cultural Monuments of Belgrade.

Chicago Citation Edition Citation

Popović, Marko, und Olga Kavran. The Fortress of Belgrade. Beograd: Institute for the Protection of Cultural Monuments of Belgrade, 1991.

MLA Citation Edition Citation

Popović, Marko, und Olga Kavran. The Fortress of Belgrade. Institute for the Protection of Cultural Monuments of Belgrade, 1991.