Oarde, C. M., & del Valle, M. Extraction and storage stability of red color from Roselle (Hibiscus sabdariffa).
Lua i Stíl Chicago (17ú heag.)Oarde, Cynthia M., agus Mercedita del Valle. Extraction and Storage Stability of Red Color from Roselle (Hibiscus Sabdariffa). 1978.
Lua MLA (9ú heag.)Oarde, Cynthia M., agus Mercedita del Valle. Extraction and Storage Stability of Red Color from Roselle (Hibiscus Sabdariffa).
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.