(1997). Portfolios for teachers in training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development.
Chicago Style aipamenaPortfolios for Teachers in Training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development, 1997.
MLA aipamenaPortfolios for Teachers in Training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.