Dyfyniad APA

The Canadian IUFRO World Congress Organizing Committee. (1991). Congress report. IUFRO Organizing Committee.

Dyfyniad Arddull Chicago

The Canadian IUFRO World Congress Organizing Committee. Congress Report. Canada: IUFRO Organizing Committee, 1991.

Dyfyniad MLA

The Canadian IUFRO World Congress Organizing Committee. Congress Report. IUFRO Organizing Committee, 1991.

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