1. Bungin Burhan 2017. Metode Penelitian Kualitatif. PT. Raja Grafindo Persada Jakarta Bungin Burhan 2017. Metode Penelitian Kualitatif. PT. Raja Grafindo Persada Jakarta
2. Doun Kauchak Paul Eggen 2012. Learning and Teaching-Research by Methode. Person. Doun Kauchak Paul Eggen 2012. Learning and Teaching-Research by Methode. Person.
3. Edward S. Robinson 2011 The Psychology of Public Education. American Journal of Helath Edward S. Robinson 2011 The Psychology of Public Education. American Journal of Helath