Dyfyniad APA

Heybroek H M, S. B. R., & Weissenberg, V. K. (1982). Resistance to diseases and pests in forest trees: Proceedings. Centre for Agricultural Publishing and Documentati.

Dyfyniad Arddull Chicago

Heybroek H M, Stephen B R., and Van K. Weissenberg. Resistance to Diseases and Pests in Forest Trees: Proceedings. Netherlands: Centre for Agricultural Publishing and Documentati, 1982.

Dyfyniad MLA

Heybroek H M, Stephen B R., and Van K. Weissenberg. Resistance to Diseases and Pests in Forest Trees: Proceedings. Centre for Agricultural Publishing and Documentati, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.