APA Style

Baduara, Sotar, Sirait, Sabar Martin. (). . : .

Chicago Style

Baduara, Sotar, Sirait, Sabar Martin. . : , . .

MLA Style

Baduara, Sotar, Sirait, Sabar Martin. . : , . .

Turabian Style

Baduara, Sotar, Sirait, Sabar Martin. . : , . .