I. Ronyastra

Natural Dyes Extraction Intended for Coloring Process in Fashion Indutries

I. M. Ronyastra, P. Sutrisna, R. Hadi, 2020, IOP Conference Series: Materials Science and Engineering.

What difference does the gig mobility service make in the workers’ human needs structure?

H. Raharjo, M. Hartono, I. Ronyastra, 2021, International Journal of Industrial Ergonomics.

Perancangan Mainan Puzzle untuk Media Belajar dan Media Terapi Motorik Halus bagi Anak Autis

M.Hum Hartono, I. Ronyastra, Pande Putu Darmayasa, 2020 .

The impact of expatriates directors on the Indonesian company’s performance

I. Ronyastra, 2017 .