APA (7th ed.) Citation

Lubis, S. E. F., Saragi, D., & Yunita, S. Development of problem-solving-based digital books to improve students' high-level thinking skills. Himpunan Pengembang Kurikulum Indonesia (HIPKIN).

Chicago Style (17th ed.) Citation

Lubis, Sartika Eka Fitri, Daulat Saragi, and Sri Yunita. Development of Problem-solving-based Digital Books to Improve Students' High-level Thinking Skills. Himpunan Pengembang Kurikulum Indonesia (HIPKIN).

MLA (9th ed.) Citation

Lubis, Sartika Eka Fitri, et al. Development of Problem-solving-based Digital Books to Improve Students' High-level Thinking Skills. Himpunan Pengembang Kurikulum Indonesia (HIPKIN).