Lua APA (7ú heag.)
Epstein, M. J., & Yuthas, K. (2014). Measuring and improving social impacts: A guide for nonprofits, companies, and impact investors (First edition.). Berrett-Koehler Publishers.
Lua i Stíl Chicago (17ú heag.)
Epstein, Marc J., agus Kristi Yuthas. Measuring and Improving Social Impacts: A Guide for Nonprofits, Companies, and Impact Investors. First edition. San Francisco: Berrett-Koehler Publishers, 2014.
Lua MLA (9ú heag.)
Epstein, Marc J., agus Kristi Yuthas. Measuring and Improving Social Impacts: A Guide for Nonprofits, Companies, and Impact Investors. First edition. Berrett-Koehler Publishers, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.