Epstein, J. L., & Salinas, K. C. (1992). TIPS, teachers involve parents in schoolwork: Manual for teachers: math and science interactive homework in the elementary grades. Baltimore, Md.: Center on Families, Communities, Schools and Children's Learning, Johns Hopkins University.

Epstein, Joyce Levy, and Karen Clark Salinas. TIPS, Teachers Involve Parents in Schoolwork: Manual for Teachers: Math and Science Interactive Homework in the Elementary Grades. Baltimore, Md.: Center on Families, Communities, Schools and Children's Learning, Johns Hopkins University, 1992.

Epstein, Joyce Levy, and Karen Clark Salinas. TIPS, Teachers Involve Parents in Schoolwork: Manual for Teachers: Math and Science Interactive Homework in the Elementary Grades. Baltimore, Md.: Center on Families, Communities, Schools and Children's Learning, Johns Hopkins University, 1992.