Gladstone, A. (1986). The manager's guide to international labour standards. International Labour Office.
Lua i Stíl Chicago (17ú heag.)Gladstone, Alan. The Manager's Guide to International Labour Standards. Geneva: International Labour Office, 1986.
Lua MLA (9ú heag.)Gladstone, Alan. The Manager's Guide to International Labour Standards. International Labour Office, 1986.
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