APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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