Date: Oct 19, 2021
Publisher: Department of Mathematics, Universitas Negeri Gorontalo, Universitas Negeri Gorontalo
Date: Jul 31, 2021
Publisher: Fakultas MIPA, Universitas Hamzanwadi, Universitas Hamzanwadi
Date: Jun 16, 2016
Publisher: Universitas Muhammadiyah Metro, Universitas Muhammadiyah Metro