Ragan, W. B. (1966). Modern elementary curriculum (3rd ed.). Holt, Rinehart and Winston.
Cita Chicago Style (17a ed.)Ragan, William B. Modern Elementary Curriculum. 3rd ed. New York: Holt, Rinehart and Winston, 1966.
Cita MLA (8a ed.)Ragan, William B. Modern Elementary Curriculum. 3rd ed. Holt, Rinehart and Winston, 1966.
Precaución: Estas citas no son 100% exactas.