Comparative analyses of operating hours and working times in the European Union. [ca. 2009]. In L. Delsen (Hrsg.), Contributions to Economics [Book]. Heidelberg, Neckar: Physica-Verlag.
ISO-690 (author-date, English)DELSEN, Lei (Hrsg.). Heidelberg, Neckar: Physica-Verlag. ISBN 9783790821840.
Modern Language Association 9th editionDelsen, L., Herausgeber. „Comparative analyses of operating hours and working times in the European Union“. Contributions to Economics, book, Physica-Verlag, 2009.
Mohr Siebeck - Recht (Deutsch - Österreich): Comparative analyses of operating hours and working times in the European Union, Heidelberg, Neckar 2009.
Emerald - HarvardDelsen, L. (Hrsg.). (2009), Comparative analyses of operating hours and working times in the European Union, Contributions to Economics, Bd. , Physica-Verlag, Heidelberg, Neckar.