Stull, D. (1946). Our world Ready. Allyn & bacon.
Cita Chicago (17th ed.)Stull, D. Our World Ready. Boston: Allyn & bacon, 1946.
Cita MLA (9th ed.)Stull, D. Our World Ready. Allyn & bacon, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.