APA Style

Umam, Khaerul, Nurjaman, Kadar. (). . : .

Chicago Style

Umam, Khaerul, Nurjaman, Kadar. . : , . .

MLA Style

Umam, Khaerul, Nurjaman, Kadar. . : , . .

Turabian Style

Umam, Khaerul, Nurjaman, Kadar. . : , . .