Brogan, P., & Fox, L. K. (1955). Helping children learn: A concept of elementary-school method. World Book Co.
Citace podle Chicago (17th ed.)Brogan, Peggy, a Lorene K. Fox. Helping Children Learn: A Concept of Elementary-school Method. Yonkers-Hudson, N. Y: World Book Co, 1955.
Citace podle MLA (9th ed.)Brogan, Peggy, a Lorene K. Fox. Helping Children Learn: A Concept of Elementary-school Method. World Book Co, 1955.
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