Weltzin, J. F. (1930). North Dakota school law digest and model school code. University of North Dakota.
Citace podle Chicago (17th ed.)Weltzin, Joachim Frederick. North Dakota School Law Digest and Model School Code. Grand Forks, N. D.: University of North Dakota, 1930.
Citace podle MLA (8th ed.)Weltzin, Joachim Frederick. North Dakota School Law Digest and Model School Code. University of North Dakota, 1930.
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