RETOVÁ, Janette - PÓLYA, Attila. Offshore business process outsourcing. In Studia commercialia Bratislavensia : scientific journal of Faculty of Commerce, University of Economics in Bratislava. - Bratislava : Obchodná fakulta Ekonomickej univerzity v Bratislave, 2011. ISSN 1337-7493, 2011, roč. 4, č. 15, s. 451-457.