Cross, K. P. (1981). Adults as learners. Jossey-Bass.
Cita Chicago (17th ed.)Cross, K. Patricia. Adults as Learners. San Francisco: Jossey-Bass, 1981.
Cita MLA (9th ed.)Cross, K. Patricia. Adults as Learners. Jossey-Bass, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.