APA
Wright R. J., .Teaching Number in the Classroom with 4-8 Year Olds. : SAGE Publications,2006.
Chicago
Wright Robert J, .Teaching Number in the Classroom with 4-8 Year Olds. : SAGE Publications,2006.
Harvard
Wright R. J., .Teaching Number in the Classroom with 4-8 Year Olds. : SAGE Publications,2006.
MLA
Wright Robert J, .: SAGE Publications,2006. .