Cita APA (American Psychological Association)

Amaiurko Quetzal agiria. [s.n.].

Citación Chicago Style

Amaiurko Quetzal Agiria. Donostia [etc.]: [s.n.].

Cita MLA (Modern Language Association of America)

Amaiurko Quetzal Agiria. [s.n.].