(1997). Portfolios for teachers in training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development.
Chicago-referens (17:e uppl.)Portfolios for Teachers in Training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development, 1997.
MLA-referens (9:e uppl.)Portfolios for Teachers in Training [videorecording]. Alexandria, VA : Association for Supervision and Curriculum Development, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.