Dyfyniad APA

United States. Department of State. Bureau of International Information Programs. (2012). The spirit of volunteerism. Bureau of International Information Programs, Department of State.

Dyfyniad Arddull Chicago

United States. Department of State. Bureau of International Information Programs. The Spirit of Volunteerism. Washington, D.C: Bureau of International Information Programs, Department of State, 2012.

Dyfyniad MLA

United States. Department of State. Bureau of International Information Programs. The Spirit of Volunteerism. Bureau of International Information Programs, Department of State, 2012.

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