B. Fretz

Self-efficacy and competence in independent living among oldest old persons.

R. Abler, B. Fretz, 1988, Journal of gerontology.

Intellectual and perceptual motor development as a function of therapeutic play.

W. R. Johnson, B. Fretz, J. Johnson, 1969, Research quarterly.

Changes in Perceptual-Motor Skills after a Children's Physical Developmental Program

W. R. Johnson, B. Fretz, 1967, Perceptual and motor skills.

Changes in self-concepts during a physical development program.

W. R. Johnson, B. Fretz, J. Johnson, 1968, Research quarterly.