(1971). CAO. [S.l.]: [s.n.].
Cita Chicago (17th ed.)CAO. [S.l.]: [s.n.], 1971.
Cita MLA (8th ed.)CAO. [S.l.]: [s.n.], 1971.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)
(1971). CAO. [S.l.]: [s.n.].
Cita Chicago (17th ed.)CAO. [S.l.]: [s.n.], 1971.
Cita MLA (8th ed.)CAO. [S.l.]: [s.n.], 1971.