Castilho, C.T. e Gomes, C.L. (2017) “The Role of Professionals in Two Nature-Based Activities in Brazil for Visitors’ Connection with nature: Rock Climbing and Birdwatching”, Revista Brasileira de Ecoturismo (RBEcotur), 10(1). doi:10.34024/rbecotur.2017.v10.6540.