Hartog, C. (1981). ý toca Guitarra!: Easy Spanish Pieces for Guitar. Alsbach Educa.
Chicago-Zitierstil (17. Ausg.)Hartog, Cees. ý Toca Guitarra!: Easy Spanish Pieces for Guitar. Naarden, NL: Alsbach Educa, 1981.
MLA-Zitierstil (8. Ausg.)Hartog, Cees. ý Toca Guitarra!: Easy Spanish Pieces for Guitar. Alsbach Educa, 1981.
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