Cita APA (7th ed.)
Anonymous, [. (1950). Parallel Organum (version a). Harvard University Press.
Cita Chicago (17th ed.)
Anonymous, [^]. Parallel Organum (version a). [Place of publication not identified]: Harvard University Press, 1950.
Cita MLA (9th ed.)
Anonymous, [^]. Parallel Organum (version a). Harvard University Press, 1950.
Atenció: Aquestes cites poden no estar 100% correctes.