Gaya APA

Is 4. (1995). Jakarta: Studio K2r.

Gaya Chicago

Is 4. 1995. Jakarta: Studio K2r, 1995. Text.

Gaya MLA

Is 4. 1995. Jakarta: Studio K2r, 1995. Text.

Gaya Turabian

Is 4. Jakarta: Studio K2r, 1995. Print.