Cita APA (7a ed.)

García Feijóo, M., Gómez Olea, E., & González Pinto, I. (2002). SES: Specific English Solutions, S.L. : CNAE 80422, 74832. [s.n.].

Cita Chicago Style (17a ed.)

García Feijóo, María, Estíbaliz Gómez Olea, y Ion González Pinto. SES: Specific English Solutions, S.L. : CNAE 80422, 74832. [S.l.]: [s.n.], 2002.

Cita MLA (9a ed.)

García Feijóo, María, et al. SES: Specific English Solutions, S.L. : CNAE 80422, 74832. [s.n.], 2002.