5Amy F. Smith: Reflective Portfolios Preschool Possibilities/Childhood Education Summer 2000.
6Annie W:. Ward & Mildred Murray-Ward. (1999):Assesment in the Classroom/Belmont, CA: Wadsworth Pub.
7Gelfer et al. : Portfolios: focus on young children. /Teaching Exceptional Children Vol. 31 No. 2 (Nov. /Dec. 1998 )
8Grace & Cathy(1992): The Portfolio and Its Use:Developmentally Appropriate Assessment of Young Children/ERIC Clearinghouse on Elementary and Earl), Childhood Education.