John Farndon. (2014). The Science Book (Big Ideas) (UK ed.). DK Publishing (Dorling Kindersley).
Lua i Stíl Chicago (17ú heag.)John Farndon. The Science Book (Big Ideas). UK ed. DK Publishing (Dorling Kindersley), 2014.
Lua MLA (9ú heag.)John Farndon. The Science Book (Big Ideas). UK ed. DK Publishing (Dorling Kindersley), 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.