Breckle, S., & Breckle, R. (2012). MAPPING GEOMORPHOLOGY AND TRAILS AROUND THE BIOLOGICAL STATION AT THE RESERVA BIOLOGICA ALBERTO BRENES (SIERRA DE TILARAN), COSTA RICA.
استشهاد بنمط شيكاغوBreckle, S.W., و Rolf Breckle. MAPPING GEOMORPHOLOGY AND TRAILS AROUND THE BIOLOGICAL STATION AT THE RESERVA BIOLOGICA ALBERTO BRENES (SIERRA DE TILARAN), COSTA RICA. 2012.
MLA استشهادBreckle, S.W., و Rolf Breckle. MAPPING GEOMORPHOLOGY AND TRAILS AROUND THE BIOLOGICAL STATION AT THE RESERVA BIOLOGICA ALBERTO BRENES (SIERRA DE TILARAN), COSTA RICA. 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.