TY  - BOOK
AU  - Hoffman,John S.
TI  - Instructional design-step by step: nine easy steps for designing lean, effective, and motivational 
SN  - 1475986718
PY  - 2013///
CY  - Bloomington
PB  - iUniverse Com
KW  - Instructional systems
KW  - Design
KW  - Computer-assisted instruction
ER  -