Biermann, P. 1., Rieder, I. 1., & Hannum, J. (1996). Violetta. London: Serpent's Tail.
Παραπομπή Chicago StyleBiermann, Pieke 1950-, Ines 1954-2015 Rieder, και Jill Hannum. Violetta. London: Serpent's Tail, 1996.
Deismireacht MLABiermann, Pieke 1950-, Ines 1954-2015 Rieder, και Jill Hannum. Violetta. London: Serpent's Tail, 1996.
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