1. The Minister of Education, Regulation of The Minister Education Number 20. Indonesia: The Minister of Education, 2016.
2. G. Schraw and D. R. Sperling, Assessing Metacognitive Awareness, Contemp. Educ. Psychol, 19(04) (1994) 460–475.
3. A. Woofolk, Educational Psychology, 13th ed. Ohio, USA: Pearson, 2016.
4. S. A. Coutinho, The relationship between goals, metacognition, and academic success, Educate, 7(1) (2007), 39–47.
5. J. R. Fraenkel and Norman E. Wallen, How to Design and Evaluate Research in Education. Jossey-Bass Publishers, 2009.