Cita APA (7a ed.)

Vergniory Arana, I. (1972). Vizcaya, 1810-1814. [s.n.].

Cita Chicago Style (17a ed.)

Vergniory Arana, Isabel. Vizcaya, 1810-1814. [S.l.]: [s.n.], 1972.

Cita MLA (9a ed.)

Vergniory Arana, Isabel. Vizcaya, 1810-1814. [s.n.], 1972.