Nasution UO, Lidya M, Syahputro SB. Pengaruh Variasi Produk terhadap Minat Beli Ulang pada Serasa Cake & Coffee Tanjungpinang. surplus [Internet]. 2026 Feb. 6 [cited 2026 Oct. 8];4(2):262-6. Available from: https://yptb.org/index.php/sur/article/view/1648