Hidayat, Syarif Imam, Yudianto, Savitri Winawati Hidayat, Febri Ari Marpaung, Irwantha Sihombing, Yoga Prayoga, and Umar Khasan. 2025. Peran Ekonomi Dan Pangan. PT. Ghani Press Group. https://e-book.ghanipress.com/index.php/ghanipress/catalog/book/4.