Langer, G. A. (1990). Calcium and the heart. Raven Press.
Lua i Stíl Chicago (17ú heag.)Langer, Glenn A. Calcium and the Heart. New York: Raven Press, 1990.
Lua MLA (9ú heag.)Langer, Glenn A. Calcium and the Heart. Raven Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.