@book{ 0-1134256310, title = {Neugriechische Konversations-Grammatik: Methode Gaspey-Otto-Sauer}, series = {Lehrbücher Methode Gaspey-Otto-Sauer}, author = {Petraris, Karolos and Gerhards, Josef}, editor = {Gerhards, Josef}, address = {Heidelberg}, publisher = {Groos}, year = {1925}, edition = {3. Aufl.}, language = {Greek}, language = {German}, url = {https://katalog.ub.uni-leipzig.de/Record/0-1134256310} }