APA (7th ed.) Citation

Abadal, E., & Codina, L. (2007). Google, Quaero, buscadores académicos. [s.n.].

Chicago Style (17th ed.) Citation

Abadal, Ernest, and Lluís Codina. Google, Quaero, Buscadores Académicos. [Barcelona]: [s.n.], 2007.

MLA (8th ed.) Citation

Abadal, Ernest, and Lluís Codina. Google, Quaero, Buscadores Académicos. [s.n.], 2007.