Silver, H. F. (2010). Compare & contrast: Teaching comparative thinking to strengthen student learning. ASCD.
Chicago-Zitierstil (17. Ausg.)Silver, Harvey F. Compare & Contrast: Teaching Comparative Thinking to Strengthen Student Learning. Alexandria, Va: ASCD, 2010.
MLA-Zitierstil (9. Ausg.)Silver, Harvey F. Compare & Contrast: Teaching Comparative Thinking to Strengthen Student Learning. ASCD, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.