BEE, H. (1975). The Developing Child. Harper & Row Publishers.
Lua i Stíl Chicago (17ú heag.)BEE, Helen. The Developing Child. Harper & Row Publishers, 1975.
Lua MLA (8ú heag.)BEE, Helen. The Developing Child. Harper & Row Publishers, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.