International Labour Office & ebrary, Inc. (2011). Manual on the measurement of volunteer work. International Labour Office.
Citação do estilo Chicago (17ª ed.)International Labour Office e Inc ebrary. Manual on the Measurement of Volunteer Work. Genève, Switzerland: International Labour Office, 2011.
Citação MLA (9ª ed.)International Labour Office e Inc ebrary. Manual on the Measurement of Volunteer Work. International Labour Office, 2011.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.