3Andrew T. Lumpe, Judy Beck. A profile of high school biology textbooks using scientific literacy recommendations. The American Biology Teacher, 1996,58:147- 152.
4Chiappetta, E. L., D. A., Senthna,G.H.A method to quantify major themes of scientific literacy in science textbooks.Journal of Research in Science Teaching, 1991b,28(8):713-725.
5Chiappatta,E.L., D.A., Senthna,G.H.A quantitative analysis of high school chemistry textbooks for scientific literacy themes and expository learning aids.Journal of Research in Science Teaching, 1991,28:939-951.