TY  - BOOK
AU  - Clark,Ruth Colvin
AU  - Nguyen,Frank
AU  - Sweller,John
TI  - Efficiency in learning: evidence-based guidelines to manage cognitive load 
SN  - 0787977284
AV  - HD58.82  .C52 2006
PY  - 2006///
CY  - San Francisco
PB  - Jossey-Bass
ER  -