Não informado. (1941). Agricultura experimental. University of Puerto Rico, Agricultural Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultura Experimental. Rio Piedras, Porto Rico: University of Puerto Rico, Agricultural Experiment Station, 1941.
Lua MLA (8ú heag.)Não informado. Agricultura Experimental. University of Puerto Rico, Agricultural Experiment Station, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.