Berg, L. (2012). The baby signing bible: Baby sign language made easy. Penguin.
Lua i Stíl Chicago (17ú heag.)Berg, Laura. The Baby Signing Bible: Baby Sign Language Made Easy. New York: Penguin, 2012.
Lua MLA (8ú heag.)Berg, Laura. The Baby Signing Bible: Baby Sign Language Made Easy. Penguin, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.