APA (7th ed.) Citation

Allen, H. R. (1963). Open door to learning: The land-grant systems enters its second century. University of Illinois Press.

Chicago Style (17th ed.) Citation

Allen, Herman R. Open Door to Learning: The Land-grant Systems Enters Its Second Century. Urbana: University of Illinois Press, 1963.

MLA (9th ed.) Citation

Allen, Herman R. Open Door to Learning: The Land-grant Systems Enters Its Second Century. University of Illinois Press, 1963.