@book{ title = "Joh. Hadloubes Gedichte", author = "Hadlaub, Johannes,Ettmüller, Ernst Moritz Ludwig", year = "[1840]", publisher = "Zürcher & Furrer", address = "Zürich", language = "ger", howpublished = "print", series = "Mitteilungen der Antiquarischen Gesellschaft in Zürich, 1,8", }