1. Reflective practice and teacher education;Adler,1994
2. The effect of portfolio-based instruction on composition students' final examination scores, course grades, and attitudes toward writing;Baker;Research in the Teaching of English,1993
3. Portfolios in teacher education;Barton;Journal of Teacher Education,1993
4. Content analysis;Baxter,1992
5. Content analysis in communication research;Berelson,1952