(2011). Labour statistics convention 160 and Labour statistics recommendation 170. Labstat Updates.
Chicago Style aipamena"Labour Statistics Convention 160 and Labour Statistics Recommendation 170." Labstat Updates 2011.
MLA aipamena"Labour Statistics Convention 160 and Labour Statistics Recommendation 170." Labstat Updates, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.