BEE, H. L., & MITCHELL, S. K. (1984). The developing person: A life-span approach.-- Ed.2. Harper and Row.

BEE, Helen L., and Sandra K. MITCHELL. The Developing Person: A Life-span Approach.-- Ed.2. New York: Harper and Row, 1984.

BEE, Helen L., and Sandra K. MITCHELL. The Developing Person: A Life-span Approach.-- Ed.2. Harper and Row, 1984.