APA Style

Waluyo, Eko, Kusuma, Bayu. (). . : .

Chicago Style

Waluyo, Eko, Kusuma, Bayu. . : , . .

MLA Style

Waluyo, Eko, Kusuma, Bayu. . : , . .

Turabian Style

Waluyo, Eko, Kusuma, Bayu. . : , . .