Gaya APA

Siregar, A., Permanasari, I. (1982). Sunyi Nirmala (1). Indonesia: PT. Karya Unipress.

Gaya MLA

Siregar, Ashadi., Permanasari, Irna. "Sunyi Nirmala". 1 Indonesia: PT. Karya Unipress, 1982. Text.