Acknowledgments
The author would like to thank Lembaga Pengelola Dana Pendidikan (LPDP). Thank you to Prof. Amung Ma’mun from Universitas Pendidikan Indonesia who has discussed and provided access to the book. Finally, the author would like to express his deepest gratitude to Fikri Yanda from Universitas Pendidikan Indonesia, for his early readings and editing of the article.