Petrić, H. (2007). - Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina: - Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina. Podravina. Časopis za multidisciplinarna istraživanja, p. 2.
Chicago stil citiranjaPetrić, Hrvoje. "- Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina: - Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina." 2007: 2.
MLA stil citiranjaPetrić, Hrvoje. "- Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina: - Drava River Flooding in Varaždin and Koprivnica Parts of Podravina (Drava River Region – Between Croatia and Hungary) in the Period 17th-19th Century, Podravina." 2007: 2.