- Libro electrónicoe-Learning and the Science of InstructionRuth C. Clark
- Libro electrónicoe-Learning and the Science of InstructionRuth C. Clark
- Libro electrónicoDeveloping Technical TrainingRuth C. Clark
- Libro electrónicoScenario-based e-LearningRuth C. Clark
- Libro electrónicoGraphics for LearningRuth C. Clark
- Libro electrónicoThe New Virtual ClassroomRuth C. Clark