Cita APA (7a ed.)

Cropley, A. J. (1980). Towards a system of lifelong education: Some practical considerations. Unesco Institute for Education ; Pergamon Press.

Cita Chicago Style (17a ed.)

Cropley, A. J. Towards a System of Lifelong Education: Some Practical Considerations. Hamburg : New York: Unesco Institute for Education ; Pergamon Press, 1980.

Cita MLA (8a ed.)

Cropley, A. J. Towards a System of Lifelong Education: Some Practical Considerations. Unesco Institute for Education ; Pergamon Press, 1980.