Rachmad, Anitya Jauza, Universitas Harapan Medan
RAFIKA HANJAYA PUTRI, LIEM, ANGELITA, Semarang University (Indonesia)
Rahayu, Eka, Universitas Harapan Medan (Indonesia)
Rahayu, Eka, Universitas Harapan Medan
Rahmadani, Reni, Universitas Negeri Medan (Indonesia)
Rahmah, Sabrina Aulia, Universitas Dharmawangsa (Indonesia)
Rahmaniar, Rahmaniar
Rahmatika, Ahmad, Universitas Muhammadiyah Sumatera Utara (Indonesia)
Raja Gunung, Tar Muhammad, Universitas Satya Terra Bhinneka (Indonesia)
Rakhmawati, Fibri
Ramadhan, Andri, University of Alazhar Medan (Indonesia)
Ramadhana, Muhammad Wira, Harapan Medan University (Indonesia)
Ramadhani, Fanny, Universitas Negeri Medan
Ramadhani, Fanny, Universitas Muhammadiyah Sumatera Utara (Indonesia)
Ramadhani, Fanny, Universtas Muhammadiyah Sumatera Utara
Ramadhani, Umaya, Universitas Sumatera Utara (Indonesia)
Ridho, Muhammad, UMSU
Rifki, Mhd Ikhsan, Universitas Islam Negeri Sumatera Utara (Indonesia)
Risfendra, Risfendra, Padang State University (Indonesia)
Riska, Melia
Riza, Ferdy, University of Muhammadyah Sumatera Utara (Indonesia)
Rizal, Fahmi, Building Engineering Department of Universitas Negeri Padang, Indonesia
Rizki, Mhd Fahmi Syawali, Universitas Al-Azhar - Medan
Rosnelly, Rika, Universitas Potensi Utama (Indonesia)
Rosnita, Lidya, Malikussaleh University (Indonesia)
Rosnita, Lidya, Malikussaleh University
Rusdi, Muhammad