Amphibian diversity across three adjacent ecosystems in Área de Conservación Guanacaste, Costa Rica oleh Alex W. Edwards, Xavier A. Harrison, M. Alex Smith, Maria Marta Chavarría Díaz, Mahmood Sasa, Daniel H. Janzen, Winnie Hallwachs, Gerardo Chaves, Roberto Fernández, Caroline Palmer, Chloe Wilson, Alexandra North, Robert Puschendorf