Dyfyniad APA

(2002). Seventy-seventh annual report: 2001. Oxford Forestry Institute, University of Oxford.

Dyfyniad Arddull Chicago

Seventy-seventh Annual Report: 2001. Oxford Forestry Institute, University of Oxford, 2002.

Dyfyniad MLA

Seventy-seventh Annual Report: 2001. Oxford Forestry Institute, University of Oxford, 2002.

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