Cita APA (7a ed.)

Ferrer Jeremies, O. (1987). Gamma, S.A.

Cita Chicago Style (17a ed.)

Ferrer Jeremies, Oriol. Gamma, S.A. 1987.

Cita MLA (9a ed.)

Ferrer Jeremies, Oriol. Gamma, S.A. 1987.