Kerrod, R. (1997). Macmillan Revised ENCYCLOPEDIA of SCIENCE Industry 8. Macmillan Reference.
Lua i Stíl Chicago (17ú heag.)Kerrod, Robin. Macmillan Revised ENCYCLOPEDIA of SCIENCE Industry 8. Macmillan Reference, 1997.
Lua MLA (8ú heag.)Kerrod, Robin. Macmillan Revised ENCYCLOPEDIA of SCIENCE Industry 8. Macmillan Reference, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.