(2000). Mathematics: Overview, 1999. U.S. Department of Education.
Chicago (17e ed.) BronvermeldingMathematics: Overview, 1999. U.S. Department of Education, 2000.
MLA (9e ed.) BronvermeldingMathematics: Overview, 1999. U.S. Department of Education, 2000.
Let op: Deze citaties zijn niet altijd 100% accuraat.