Bermúdez Ardila, F. (2013). Crystal castle: Prince Bupin and the magic ankle boots. Fernando Bermúdez Ardila.
Chicago-čujuhus (17. p.)Bermúdez Ardila, Fernando. Crystal Castle: Prince Bupin and the Magic Ankle Boots. [Bogotá]: Fernando Bermúdez Ardila, 2013.
MLA-čujuhus (9. p.)Bermúdez Ardila, Fernando. Crystal Castle: Prince Bupin and the Magic Ankle Boots. Fernando Bermúdez Ardila, 2013.
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