APA (7e ed.) Bronvermelding

(2006). Problem Solving in the PISA & TIMSS 2003 Assessments. U.S. Department of Education.

Chicago (17e ed.) Bronvermelding

Problem Solving in the PISA & TIMSS 2003 Assessments. U.S. Department of Education, 2006.

MLA (9e ed.) Bronvermelding

Problem Solving in the PISA & TIMSS 2003 Assessments. U.S. Department of Education, 2006.

Let op: Deze citaties zijn niet altijd 100% accuraat.