APA
Spencer P. L., Brydegaard M. (., . (1966). Building mathematical competence in the elementary school. New York: Holt, Rinehart and Winston.
Chicago
Spencer Peter Lincoin, Brydegaard Marguerite (Ed), . 1966. Building mathematical competence in the elementary school. New York: Holt, Rinehart and Winston.
Harvard
Spencer P. L., Brydegaard M. (., . (1966). Building mathematical competence in the elementary school. New York: Holt, Rinehart and Winston.
MLA
Spencer Peter Lincoin, Brydegaard Marguerite (Ed), . Building mathematical competence in the elementary school. New York: Holt, Rinehart and Winston. 1966.