Clark, J. S. (1899). Teacher's manual, part IV, for the Prang elementary course in art instruction: Books 7 and 8, sixth year. The Prang Educational Co.
Citace podle Chicago (17th ed.)Clark, John Spencer. Teacher's Manual, Part IV, for the Prang Elementary Course in Art Instruction: Books 7 and 8, Sixth Year. Boston: The Prang Educational Co, 1899.
Citace podle MLA (8th ed.)Clark, John Spencer. Teacher's Manual, Part IV, for the Prang Elementary Course in Art Instruction: Books 7 and 8, Sixth Year. The Prang Educational Co, 1899.
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