Cita APA (7th ed.)

Jacques, F., & Jacques, F. (1985). [Espace logique ..., 2].

Cita Chicago (17th ed.)

Jacques, Francis, i Francis Jacques. [Espace Logique ..., 2]. Paris, 1985.

Cita MLA (8th ed.)

Jacques, Francis, i Francis Jacques. [Espace Logique ..., 2]. 1985.