Caldwell, I. S. (1959). The organizing principle in the curriculum of Christian education: Protestant trends.
Chicago (17e ed.) BronvermeldingCaldwell, Irene Smith. The Organizing Principle in the Curriculum of Christian Education: Protestant Trends. 1959.
MLA (8e ed.) BronvermeldingCaldwell, Irene Smith. The Organizing Principle in the Curriculum of Christian Education: Protestant Trends. 1959.
Let op: Deze citaties zijn niet altijd 100% accuraat.