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Dyfyniad Arddull Chicago, Plant propagation. Plant Propagation Principles and Practice - Hudson T. Hartman, Dale E. Kester Dkk. Prentice Hall, 1997.
Dyfyniad MLA, Plant propagation. Plant Propagation Principles and Practice - Hudson T. Hartman, Dale E. Kester Dkk. Prentice Hall, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.