Dyfyniad APA

International Labour Office & ebrary, Inc. (2011). Manual on the measurement of volunteer work. International Labour Office.

Dyfyniad Arddull Chicago

International Labour Office and Inc ebrary. Manual on the Measurement of Volunteer Work. Genève, Switzerland: International Labour Office, 2011.

Dyfyniad MLA

International Labour Office and Inc ebrary. Manual on the Measurement of Volunteer Work. International Labour Office, 2011.

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