JACOBSON, W. J., & BERGMAN, A. B. (1987). Science for children: A book for teachers.-- Ed.2. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)JACOBSON, Willard J., agus Abby Barry BERGMAN. Science for Children: A Book for Teachers.-- Ed.2. London: Prentice-Hall, 1987.
Lua MLA (9ú heag.)JACOBSON, Willard J., agus Abby Barry BERGMAN. Science for Children: A Book for Teachers.-- Ed.2. Prentice-Hall, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.