Kiky, Andreas. “Analisis January Effect Pada Saham Astra Internasional (ASII) Di Bursa Efek Indonesia Pada Periode 2005 - 2015”. Ultima Management : Jurnal Ilmu Manajemen 8, no. 2 (December 2, 2016): 54-63. Accessed March 28, 2024. https://ejournals.umn.ac.id/index.php/manajemen/article/view/592.