National Dropout Prevention Center & National Dropout Prevention Network (U.S.). (1994). The Journal of at-risk issues: A joint publication of the National Dropout Prevention Center and Network. National Dropout Prevention Center and the National Dropout Prevention Network.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Dropout Prevention Center και National Dropout Prevention Network (U.S.). The Journal of At-risk Issues: A Joint Publication of the National Dropout Prevention Center and Network. Clemson, SC: National Dropout Prevention Center and the National Dropout Prevention Network, 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)National Dropout Prevention Center και National Dropout Prevention Network (U.S.). The Journal of At-risk Issues: A Joint Publication of the National Dropout Prevention Center and Network. National Dropout Prevention Center and the National Dropout Prevention Network, 1994.