Schilling, N. (2014). The Ecological Opening of a Sensitive Natural Landscape: After years of degradation, the Arribas cliffs and dunes in Foz do Arelho, Portugal, have been revitalised ; A wooden walkway was inserted into this fragile landscape. Topos.
Chicago-referens (17:e uppl.)Schilling, Nádia. "The Ecological Opening of a Sensitive Natural Landscape: After Years of Degradation, the Arribas Cliffs and Dunes in Foz Do Arelho, Portugal, Have Been Revitalised ; A Wooden Walkway Was Inserted into This Fragile Landscape." Topos 2014.
MLA-referens (8:e uppl.)Schilling, Nádia. "The Ecological Opening of a Sensitive Natural Landscape: After Years of Degradation, the Arribas Cliffs and Dunes in Foz Do Arelho, Portugal, Have Been Revitalised ; A Wooden Walkway Was Inserted into This Fragile Landscape." Topos, 2014.