APA Style

Sikumbang, Risman, Mujahidin, Ahmad. (). . : .

Chicago Style

Sikumbang, Risman, Mujahidin, Ahmad. . : , . .

MLA Style

Sikumbang, Risman, Mujahidin, Ahmad. . : , . .

Turabian Style

Sikumbang, Risman, Mujahidin, Ahmad. . : , . .