(2004). Say, om. [s.n.].
Cita Chicago (17th ed.)Say, Om. [Singapore: [s.n.], 2004.
Cita MLA (9th ed.)Say, Om. [s.n.], 2004.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)
(2004). Say, om. [s.n.].
Cita Chicago (17th ed.)Say, Om. [Singapore: [s.n.], 2004.
Cita MLA (9th ed.)Say, Om. [s.n.], 2004.