![Ely, D. P., & Plomp, T. (2001). Classic writings on instructional technology (Vol. 2). Libraries Unlimited. [268 pp.]](https://i0.wp.com/ridlr.syr.edu/wp-content/uploads/2022/01/PlompBook3.jpg?fit=333%2C500&ssl=1)
Ely, D. P., & Plomp, T. (2001). Classic writings on instructional technology (Vol. 2). Libraries Unlimited. [268 pp.]
lassic writings on instructional technology (Vol. 2)
Ely, D. P., & Plomp, T. (2001). Classic writings on instructional technology (Vol. 2). Libraries Unlimited. [268 pp.]
