Dyfyniad APA
Grossnickle, S. C. (2000). Ecophysiology of northern spruce species: The performance of planted seedlings. NRC Research Press.
Dyfyniad Arddull Chicago
Grossnickle, Steven C. Ecophysiology of Northern Spruce Species: The Performance of Planted Seedlings. Ottawa: NRC Research Press, 2000.
Dyfyniad MLA
Grossnickle, Steven C. Ecophysiology of Northern Spruce Species: The Performance of Planted Seedlings. NRC Research Press, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.