Spyri, J. (1941). Heidi: Grand' mere. Paris: Flammarion.
Παραπομπή Chicago StyleSpyri, Johanna. Heidi: Grand' Mere. Paris: Flammarion, 1941.
MLA CitationSpyri, Johanna. Heidi: Grand' Mere. Paris: Flammarion, 1941.
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