Weltzien, F. Tintenflecken als Ideengenerator: Alexander Cozens' 'A new method of assisting the invention in drawing original compositions of landscape' / Friedrich Weltzien. Improvisation und Invention : Momente, Modelle, Medien.(2014).
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Weltzien, Friedrich. "Tintenflecken Als Ideengenerator: Alexander Cozens' 'A New Method of Assisting the Invention in Drawing Original Compositions of Landscape' / Friedrich Weltzien." Improvisation Und Invention : Momente, Modelle, Medien.(2014) .
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Weltzien, Friedrich. "Tintenflecken Als Ideengenerator: Alexander Cozens' 'A New Method of Assisting the Invention in Drawing Original Compositions of Landscape' / Friedrich Weltzien." Improvisation Und Invention : Momente, Modelle, Medien.(2014), .