Reference

Thomas Ziegler, Jakob Unger, Alfred Feiler, Richard Kraft (2002): On the occurrence of the capybara Hydrochoerus hydrochaeris (Linnaeus, 1766), in the Dry Chaco of Paraguay (Mammalia: Rodentia: Hydrochoeridae) – Faunistische Abhandlungen - Staatliches Museum für Tierkunde Dresden – 22: 423 - 429.