Cita APA (7a ed.)

Alvarez Alday, M. (1984). ELECTRA S.A. [s.n.].

Cita Chicago Style (17a ed.)

Alvarez Alday, Marta. ELECTRA S.A. [S.l.]: [s.n.], 1984.

Cita MLA (9a ed.)

Alvarez Alday, Marta. ELECTRA S.A. [s.n.], 1984.