Cita APA (American Psychological Association)

Heini, H., Arregi, J., & Rementeria. (1927). Heine'ren olerkiak. [s.n.].

Citación Chicago Style

Heini, Heinrich, Joseba Arregi, and Rementeria. Heine'ren Olerkiak. [S.l.]: [s.n.], 1927.

Cita MLA (Modern Language Association of America)

Heini, Heinrich, et al. Heine'ren Olerkiak. [s.n.], 1927.