Nurul Aini Ritonga, Sri Ayla, Iskandar Muda Sipayung. The Effect of Serving Speed and Menu Diversity on Con-sumer Buying Interest at The Anugrah Padang Bulan Rantau Prapat Board, Labuhanbatu Regency . Ijemr [Internet]. 2025 May 8 [cited 2025 May 14];4(2):295-306. Available from: https://ijemr.asia/index.php/ijemr/article/view/382