Gaya APA

-, ., Widiastuti, E. (2020). Journal Of The Indonesian Mathematical Society Volume 26 Number 1 March 2020 (-). Bandung: The Indonesian Mathematical Society.

Gaya MLA

-, ., Widiastuti, Eka. "Journal Of The Indonesian Mathematical Society Volume 26 Number 1 March 2020". - Bandung: The Indonesian Mathematical Society, 2020. Text.