Varuna Kolkijkovin และผู้แต่งคนอื่นๆ. (2020) Happiness and Associated Factors of First to Sixth - Year Medical Students at Faculty of Medicine Vajira Hospital. <i>Vajira Medical Journal</i>, <i>64</i>(6), 397-410.Varuna Kolkijkovin และผู้แต่งคนอื่นๆ. "Happiness and Associated Factors of First to Sixth - Year Medical Students at Faculty of Medicine Vajira Hospital". Vajira Medical Journal 64 (2020):397-410.Varuna Kolkijkovin และผู้แต่งคนอื่นๆ. Happiness and Associated Factors of First to Sixth - Year Medical Students at Faculty of Medicine Vajira Hospital. Text and Journal Publication:ม.ป.ท. 2020.