Cita APA (7th ed.)

(1963). Directory of special libraries and information centers. Gale Research.

Cita Chicago (17th ed.)

Directory of Special Libraries and Information Centers. Detroit: Gale Research, 1963.

Cita MLA (9th ed.)

Directory of Special Libraries and Information Centers. Gale Research, 1963.

Atenció: Aquestes cites poden no estar 100% correctes.