APA

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

Chicago

Allen Herman R, . 1963. Open door to learning: the land-grant system enters its second century. Urbana: University of Illinois Press.

Harvard

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

MLA

Allen Herman R, . Open door to learning: the land-grant system enters its second century. Urbana: University of Illinois Press. 1963.