Caldwell, I. S. (1959). The organizing principle in the curriculum of Christian education: Protestant trends.
Chicago-стиль цитированияCaldwell, Irene Smith. The Organizing Principle in the Curriculum of Christian Education: Protestant Trends. 1959.
MLA-цитированиеCaldwell, Irene Smith. The Organizing Principle in the Curriculum of Christian Education: Protestant Trends. 1959.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.