TY  - BOOK
AU  - Keirns,Johanna L.
TI  - Designs for self-instruction: principles, processes, and issues in developing self-directed learning 
SN  - 0205297013
PY  - 1999///
CY  - Boston
PB  - Allyn and Bacon
KW  - Instructional systems
KW  - Design
KW  - Adult learning
N1  - References : p. 170-172
ER  -