Cita APA (7th ed.)
Wolff, P. H., & Keith, R. M. (1969). Planning for better learning.
Cita Chicago (17th ed.)
Wolff, Peter H., i Ronald Mac Keith. Planning for Better Learning. 1969.
Cita MLA (9th ed.)
Wolff, Peter H., i Ronald Mac Keith. Planning for Better Learning. 1969.
Atenció: Aquestes cites poden no estar 100% correctes.