Dyfyniad APA

Barber, H. M. E., & Hayes, J. Y. (1973). Exploring the physical world of children of 5-9. Dent.

Dyfyniad Arddull Chicago

Barber, H. M. E., and J. Y. Hayes. Exploring the Physical World of Children of 5-9. London: Dent, 1973.

Dyfyniad MLA

Barber, H. M. E., and J. Y. Hayes. Exploring the Physical World of Children of 5-9. Dent, 1973.

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