Zeyen, Anica, and Markus Beckmann. 2018a. Social Entrepreneurship and Business Ethics: Understanding the Contribution and Normative Ambivalence of Purpose-Driven Venturing. London: Taylor & Francis Ltd.
———. 2018b. Social Entrepreneurship and Business Ethics: Understanding the Contribution and Normative Ambivalence of Purpose-Driven Venturing. Taylor & Francis Group. https://ebookcentral-proquest-com.royalholloway.idm.oclc.org/lib/rhul/detail.action?docID=5574118.