Gaya APA

YUNINGSIH, Yuyun, WARDANI Susilo. (2008). Happy with English . Surakarta: Era Pustaka Utama.

Gaya Chicago

YUNINGSIH, Yuyun, WARDANI Susilo. Happy with English. Surakarta: Era Pustaka Utama, 2008. Text.

Gaya MLA

YUNINGSIH, Yuyun, WARDANI Susilo. Happy with English. Surakarta: Era Pustaka Utama, 2008. Text.

Gaya Turabian

YUNINGSIH, Yuyun, WARDANI Susilo. Happy with English. Surakarta: Era Pustaka Utama, 2008. Print.