McKeefery, W. J. (1970). Parameters of learning: Perspective in higher education today. Southern Illinois University Press.
Lua i Stíl Chicago (17ú heag.)McKeefery, William James. Parameters of Learning: Perspective in Higher Education Today. Carbondale: Southern Illinois University Press, 1970.
Lua MLA (9ú heag.)McKeefery, William James. Parameters of Learning: Perspective in Higher Education Today. Southern Illinois University Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.