Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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