Sitti Rizki Mulyani,
Department of Management, University of Putra Indonesia YPTK, Padang,
Indonesia
Marta Widian Sari,
Department of Management, University of Putra Indonesia YPTK, Padang,
Indonesia
Vivi Nila Sari,
Department of Management, University of Putra Indonesia YPTK, Padang,
Indonesia
Winda Tawakalni,
Department of Management, University of Putra Indonesia YPTK, Padang,
Indonesia