Why do people donate to conservation? Insights from a `real world' campaign Veríssimo, Diogo ; Campbell, Hamish A. ; Tollington, Simon ; MacMillan, Douglas C. ; Smith, Robert J. Abstract Publication: PLoS ONE Pub Date: January 2018 DOI: 10.1371/journal.pone.0191888 Bibcode: 2018PLoSO..1391888V