Plett, P. C. (1990). Training of older workers in industrialised countries: Training report (1. publ.). Internat. Labour Office.
Chicago-Zitierstil (17. Ausg.)Plett, Peter C. Training of Older Workers in Industrialised Countries: Training Report. 1. publ. Geneva: Internat. Labour Office, 1990.
MLA-Zitierstil (9. Ausg.)Plett, Peter C. Training of Older Workers in Industrialised Countries: Training Report. 1. publ. Internat. Labour Office, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.