Rollis 

SCOPUS ID: 59471445000 STIH Tambun Bungai Palangka Raya, Indonesia

Scopus profile: https://www.scopus.com/authid/detail.uri?authorId=59471445000

Sinta profile: 

Orcid profile: 

Google Scholar profile: https://scholar.google.co.id/citations?hl=id&authuser=4&user=ze_S3tsAAAAJ