Media type: E-Article Title: Virtual Knowledge Sharing in Crowdsourcing: Measurement Dilemmas Contributor: Lenart-Gansiniec, Regina imprint: Fundacja Upowszechniajaca Wiedze i Nauke Cognitione, 2017 Published in: Journal of Entrepreneurship, Management and Innovation Language: Not determined DOI: 10.7341/20171334 ISSN: 2299-7075; 2299-7326 Origination: Footnote: Access State: Open Access