V. Sulistyowati and A. Amborowati, NEGOSIASI BISNIS Strategi, Teknik, dan Praktik dalam Dunia Usaha. PT. Ghani Press Group, 2026. Accessed: Sep. 06, 2026. [Online]. Available: https://e-book.ghanipress.com/index.php/ghanipress/catalog/book/110