Dyfyniad APA

JACOBSON, W. J., & BERGMAN, A. B. (1987). Science for children: A book for teachers.-- Ed.2. Prentice-Hall.

Dyfyniad Arddull Chicago

JACOBSON, Willard J., and Abby Barry BERGMAN. Science for Children: A Book for Teachers.-- Ed.2. London: Prentice-Hall, 1987.

Dyfyniad MLA

JACOBSON, Willard J., and Abby Barry BERGMAN. Science for Children: A Book for Teachers.-- Ed.2. Prentice-Hall, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.