Dyfyniad APA

Zak, D. R., Denton, S. R., Spurr, S. H., & Barnes, B. V. (1998). Forest ecology (4th ed.). New York: John Wiley and Sons.

Dyfyniad Arddull Chicago

Zak, Donald R., Shirley R. Denton, Stephen H. Spurr, và Burton V. Barnes. Forest Ecology. 4th ed. New York: John Wiley and Sons, 1998.

Dyfyniad MLA

Zak, Donald R., Shirley R. Denton, Stephen H. Spurr, và Burton V. Barnes. Forest Ecology. 4th ed. New York: John Wiley and Sons, 1998.

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