Adinugraha, Hendri Hermawan, et al. “Cooperation System of Gaduh Sapi in Fiqh Mu’āmalah in Tanjung Kulon Kajen Village Pekalongan”. Al-Hurriyah: Jurnal Hukum Islam, vol. 6, no. 1, Sept. 2021, pp. 1-11, doi:10.30983/alhurriyah.v6i1.4211.