Barclay, F. L. (1912). The upas tree: A Christmas story for all the year. G.P. Putnam's Sons.
Lua i Stíl Chicago (17ú heag.)Barclay, Florence L. The Upas Tree: A Christmas Story for All the Year. New York, London: G.P. Putnam's Sons, 1912.
Lua MLA (8ú heag.)Barclay, Florence L. The Upas Tree: A Christmas Story for All the Year. G.P. Putnam's Sons, 1912.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.