International Press Institute. (1962). Professional secrecy and the journalist. s.n.
Cita Chicago (17th ed.)International Press Institute. Professional Secrecy and the Journalist. Zurich: s.n, 1962.
Cita MLA (9th ed.)International Press Institute. Professional Secrecy and the Journalist. s.n, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.