# The Implementation of Problem Based Learning (PBL) Based E-Book to Improve The Learning Outcome of Vocational High School (VHS) Students

> Research article (International Journal of Educational Research Review, 2018) · cited 15× · AI/ML

**Wikidata**: [openalex:W2888357577](https://www.wikidata.org/wiki/openalex:W2888357577)  
**Source**: https://4ort.xyz/entity/the-implementation-of-problem-based-learning-pbl-based-e-book-to-improve-the-learning-outcome-of-vocational-high-school-