1.
Zeyen, A., Beckmann, M.: Social Entrepreneurship and Business Ethics: Understanding the Contribution and Normative Ambivalence of Purpose-Driven Venturing. Taylor & Francis Ltd, London (2018).
2.
Zeyen, A., Beckmann, M.: Social Entrepreneurship and Business Ethics: Understanding the Contribution and Normative Ambivalence of Purpose-Driven Venturing. Taylor & Francis Group (2018).