Haselstein, U. "My middle writing was painting": Gertrude Steins literarische Porträts / Ulla Haselstein. Darstellung: Korrespondenz : Interventionen.(2000).
Čikaški stil citiranja (17. izdanje)Haselstein, Ulla. ""My Middle Writing Was Painting": Gertrude Steins Literarische Porträts / Ulla Haselstein." Darstellung: Korrespondenz : Interventionen.(2000) .
MLA način citiranja (8. izdanje)Haselstein, Ulla. ""My Middle Writing Was Painting": Gertrude Steins Literarische Porträts / Ulla Haselstein." Darstellung: Korrespondenz : Interventionen.(2000), .
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