Cita APA (7th ed.)

(1992). English short title catalogue ESTC. [electronic resource].

Cita Chicago (17th ed.)

English Short Title Catalogue ESTC. [electronic Resource]. 1992.

Cita MLA (9th ed.)

English Short Title Catalogue ESTC. [electronic Resource]. 1992.

Atenció: Aquestes cites poden no estar 100% correctes.