Gaya APA
Harahap, I., Hutajulu, R.
(2020).
Gonrang Simalungun
.
Medan:
USU Press.
Gaya MLA
Harahap, Irwansyah., Hutajulu, Rithaony.
"Gonrang Simalungun".
Medan:
USU Press,
2020.
Art Original.