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Armstrong และผู้แต่งคนอื่นๆ. 1981. Some aspects of policy formulation, implementation and decentralization in the Thai nonformal education development project : part 2. Department of Educational Theory, University of Toronto;
Armstrong และผู้แต่งคนอื่นๆ. (1981) Some aspects of policy formulation, implementation and decentralization in the Thai nonformal education development project : part 2 . University of Toronto/Toronto.
Armstrong และผู้แต่งคนอื่นๆ. Some aspects of policy formulation, implementation and decentralization in the Thai nonformal education development project : part 2. . Toronto:University of Toronto, 1981.
Armstrong และผู้แต่งคนอื่นๆ. (1981) Some aspects of policy formulation, implementation and decentralization in the Thai nonformal education development project : part 2 . University of Toronto/Toronto.