Folga-Januszewska, D., & Baumgartner, M. (2001). Paul Klee: Od szkicownika do obrazu = from sketchbook to the painting. Muzeum Narodowe.
Citazione stile Chigago Style (17a edizione)Folga-Januszewska, Dorota, e Michael Baumgartner. Paul Klee: Od Szkicownika Do Obrazu = from Sketchbook to the Painting. Warszawa: Muzeum Narodowe, 2001.
Citatione MLA (9a ed.)Folga-Januszewska, Dorota, e Michael Baumgartner. Paul Klee: Od Szkicownika Do Obrazu = from Sketchbook to the Painting. Muzeum Narodowe, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.