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.
芝加哥风格引文National Dropout Prevention Center 与 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.
MLA引文National Dropout Prevention Center 与 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.