APA (7e ed.) Bronvermelding

International Labour Office & Dickson, D. E. N. (1986). Improve your business: Workbook. International Labour Office.

Chicago (17e ed.) Bronvermelding

International Labour Office en D. E. N. Dickson. Improve Your Business: Workbook. Geneva: International Labour Office, 1986.

MLA (9e ed.) Bronvermelding

International Labour Office en D. E. N. Dickson. Improve Your Business: Workbook. International Labour Office, 1986.