Cross, K. P. (1978). The missing link: Connecting adult learners to learning resources. College Entrance Examination Board.
Chicago-Zitierstil (17. Ausg.)Cross, Kathryn Patricia. The Missing Link: Connecting Adult Learners to Learning Resources. New York: College Entrance Examination Board, 1978.
MLA-Zitierstil (9. Ausg.)Cross, Kathryn Patricia. The Missing Link: Connecting Adult Learners to Learning Resources. College Entrance Examination Board, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.