Gaya APA

PING. (2012). Yogyakarta: BENTANG BELIA.

Gaya Chicago

PING. . Yogyakarta: BENTANG BELIA, 2012. Text.

Gaya MLA

PING. . Yogyakarta: BENTANG BELIA, 2012. Text.

Gaya Turabian

PING. Yogyakarta: BENTANG BELIA, 2012. Print.