Harwood, R. (2003). Chemistry (First South Asian Edition.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Harwood, Richard. Chemistry. First South Asian Edition. Cambridge: Cambridge University Press, 2003.
Lua MLA (8ú heag.)Harwood, Richard. Chemistry. First South Asian Edition. Cambridge University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.