Cita APA (7a ed.)

Berriozabal Arana, I. (1995). Formex Metals, S.L: CNAE 28.4. [s.n.].

Cita Chicago Style (17a ed.)

Berriozabal Arana, Igor. Formex Metals, S.L: CNAE 28.4. [S.l.]: [s.n.], 1995.

Cita MLA (9a ed.)

Berriozabal Arana, Igor. Formex Metals, S.L: CNAE 28.4. [s.n.], 1995.