Ward, H., Roden, J., Hewlett, C., & Foreman, J. (2005). Teaching science in the primary classroom: A practical guide. Paul Chapman Pub..

Ward, Hellen, Judith Roden, Claire Hewlett, and Julie Foreman. Teaching Science in the Primary Classroom: A Practical Guide. London ; Thousand Oaks, Calif.: Paul Chapman Pub., 2005.

Ward, Hellen, et al. Teaching Science in the Primary Classroom: A Practical Guide. Paul Chapman Pub., 2005.