Curriculum planning for modern schools - Saylor, John Galen 1902-1998; Alexander, William M. (Holt, Rinehart & Winston, 1966)
3. Aufl. u. d. T.: Saylor, John Galen: Planning curriculum for schools. - 4. Aufl. u. d. T.: Saylor, John Galen: Curriculum planning for better teaching and learning