Gaya APA

Rahayu, R, N., Tupan, . (2019). The collaborative writing at at the conference of Indonesian Digital Library 2013-2018 (Vol. 21, No. 1/ April 2019). Jakarta: Perpustakaan Nasional RI.

Gaya MLA

Rahayu, Rochani, Nani., Tupan, . "The collaborative writing at at the conference of Indonesian Digital Library 2013-2018". Vol. 21, No. 1/ April 2019 Jakarta: Perpustakaan Nasional RI, 2019. Text.