Listiyandini, Ratih Arruum, Andhita Nathania, Dessy Syahniar, Lidwina Sonia, and Rima Nadya. 2015. “Measuring Gratitude: The Preliminary Development of the Indonesian Gratitude Scale”. Jurnal Psikologi Ulayat 2 (2):473-96. https://doi.org/10.24854/jpu39.