Não informado. (1936). Botany of the maya area. Carnegie Institution of Washington.
Lua i Stíl Chicago (17ú heag.)Não informado. Botany of the Maya Area. Washington: Carnegie Institution of Washington, 1936.
Lua MLA (8ú heag.)Não informado. Botany of the Maya Area. Carnegie Institution of Washington, 1936.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.