Sari, Y. P., and Z. Zainuddin. “Pemberian Hadiah Pada PT BPRS Gajahtongga Kotopiliang Kota Sawahlunto”. Al-Bank: Journal of Islamic Banking and Finance, vol. 1, no. 2, Aug. 2021, pp. 123-34, doi:10.31958/ab.v1i2.3307.