(1972). Indexes to Volume 20. 1972.
Cita Chicago (17th ed.)Indexes to Volume 20. 1972, 1972.
Cita MLA (9th ed.)Indexes to Volume 20. 1972, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)
(1972). Indexes to Volume 20. 1972.
Cita Chicago (17th ed.)Indexes to Volume 20. 1972, 1972.
Cita MLA (9th ed.)Indexes to Volume 20. 1972, 1972.