Cita APA (7a ed.)

Mendia Urtiaga, I., & Albizuri Bilbao, B. (1975). Family life. [s.n.].

Cita Chicago Style (17a ed.)

Mendia Urtiaga, Itziar, y Begoña Albizuri Bilbao. Family Life. [S.l.]: [s.n.], 1975.

Cita MLA (9a ed.)

Mendia Urtiaga, Itziar, y Begoña Albizuri Bilbao. Family Life. [s.n.], 1975.