Cita APA (7th ed.)
(1949). College and research libraries. Assoc. of College and Reference Libr.
Cita Chicago (17th ed.)
College and Research Libraries. Chicago: Assoc. of College and Reference Libr, 1949.
Cita MLA (9th ed.)
College and Research Libraries. Assoc. of College and Reference Libr, 1949.
Atenció: Aquestes cites poden no estar 100% correctes.