1. BPS, Statistical Yearbook of Indonesia 2018 (BPS-Statistics Indonesia, Jakarta, 2018), 719 p.
2. BPS, Statistical Yearbook of Indonesia 2019 (BPS-Statistics Indonesia, Jakarta, 2019), 738 p.
3. BPS, Statistical Yearbook of Indonesia 2020 (BPS-Statistics Indonesia, Jakarta, 2020), 748 p.
4. BPS, Statistical Yearbook of Indonesia 2021 (BPS-Statistics Indonesia, Jakarta, 2021), 758 p.
5. Atman, J. Sains Agro 6, (2021).