Salsabila Mayla Nadhira Syifa, Ovi Ardilla, Abdul Lahif Sitompul, Ainun Meryna Aulia and Ika Safitri 2024. BEHAVIORAL HABITUATIONOF OF SMILE, GREETINGS AND GRATITUDE OF LIBRARIANS TOWARDS SCHOOL USERS. Journal of Quality Islamic Education Research. 1, 2 (Jun. 2024), 318–333.