BEE, H. L., & MITCHELL, S. K. (1984). The developing person: A life-span approach.-- Ed.2. Harper and Row.
Lua i Stíl Chicago (17ú heag.)BEE, Helen L., agus Sandra K. MITCHELL. The Developing Person: A Life-span Approach.-- Ed.2. New York: Harper and Row, 1984.
Lua MLA (9ú heag.)BEE, Helen L., agus Sandra K. MITCHELL. The Developing Person: A Life-span Approach.-- Ed.2. Harper and Row, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.