Yussen Steven R. (1998). Child development: An Introduction. Wm. C. Brown.
Lua i Stíl Chicago (17ú heag.)Yussen Steven R. Child Development: An Introduction. Lowa: Wm. C. Brown, 1998.
Lua MLA (9ú heag.)Yussen Steven R. Child Development: An Introduction. Wm. C. Brown, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.