Cita APA (7a ed.)
Allen, H. R. (1963). Open door to learning: The land-grant system enters its second century.
Cita estilo Chicago (17a ed.)
Allen, Herman R. Open Door to Learning: The Land-grant System Enters Its Second Century. 1963.
Cita MLA (9a ed.)
Allen, Herman R. Open Door to Learning: The Land-grant System Enters Its Second Century. 1963.
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