Creswell, W. H., & Newman, I. M. (1989). School health practice (9th ed.). Times Mirror.
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Dyfyniad Arddull Chicago
Creswell, William H., and Ian M. Newman. School Health Practice. 9th ed. St. Louis: Times Mirror, 1989.
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Dyfyniad MLA
Creswell, William H., and Ian M. Newman. School Health Practice. 9th ed. Times Mirror, 1989.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.