Wijianto, Wijianto, Ika Farida Ulfah, dan Ardyan Firdausi Mustoffa. 2021. “KETAHANAN UMKM FROZEN FOOD ‘WISNA FRESH’ KABUPATEN PONOROGO MELINTASI PANDEMI COVID 19”. Al-Buhuts 17 (2):343-55. https://doi.org/10.30603/ab.v17i2.2339.