Cita APA (7th ed.)
(1930). The Rugg social Science Coures: The reading books. Vol. 3. Ginn.
Cita Chicago (17th ed.)
The Rugg Social Science Coures: The Reading Books. Vol. 3. Boston [usw.]: Ginn, 1930.
Cita MLA (9th ed.)
The Rugg Social Science Coures: The Reading Books. Vol. 3. Ginn, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.