APA Style

Hasibuan, Abdul Nasser, Annam, Rahmad. (). . : .

Chicago Style

Hasibuan, Abdul Nasser, Annam, Rahmad. . : , . .

MLA Style

Hasibuan, Abdul Nasser, Annam, Rahmad. . : , . .

Turabian Style

Hasibuan, Abdul Nasser, Annam, Rahmad. . : , . .