Santos, C. A. (1975). A general survey of the chemical constituents of "Kapal-kapal" leaves [Calotropis Gigantia (Linn.) Dryand] [microform]. Photoduplication Service, University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Santos, Constancia Avendano. A General Survey of the Chemical Constituents of "Kapal-kapal" Leaves [Calotropis Gigantia (Linn.) Dryand] [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1975.
Lua MLA (9ú heag.)Santos, Constancia Avendano. A General Survey of the Chemical Constituents of "Kapal-kapal" Leaves [Calotropis Gigantia (Linn.) Dryand] [microform]. Photoduplication Service, University of the Philippines Library, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.