Hermann Schrader: Der Bilderschmuck der deutschen Sprache in Tausenden volkstümlicher Redensarten. Georg Olms, 2005 (reprint of the 7th edition of 1912 with a preface by Wolfgang Mieder) p. 475 (German)
Sigi Kube: Wie kommt die Katze in den Sack und was weiß der Kuckuck davon?: Tierische Redewendungen und ihre Bedeutung. Heyne, 2011, p. 14 (German)
Mädchenliteratur. In: Friederike Ursula Eigler, Susanne Kord: The Feminist Encyclopedia of German Literature. Greenwood, 1997, ISBN0313293139, S. 293-294 (excerpt, p. 293, at Google Books)
doi.org
T. Feldmann, "The Untameable Trotzkopf: Commerce and Canonicity in the Curious Circulation of a Classic of Germans Children's Literature in the Low Countries and Germany", Dutch Crossing, 44(2): 253. doi:10.1080/03096564.2020.1747013
jstor.org
Jennifer Redmann: Nostalgia and Optimism in Else Ury's "Nesthäkchen" Books for Young Girls in the Weimar Republic. The German Quarterly, Vol. 79, No. 4 (Fall, 2006), pp. 465–483 (JSTOR)
