Gaya APA
Somad, A., Daryapto, E, D.
(2017).
37 masalah populer
.
Riau:
Tafaqquh Media.
Gaya MLA
Somad, Abdul., Daryapto, Edy, Dwi.
"37 masalah populer".
Riau:
Tafaqquh Media,
2017.
Textbook.