APA (7th ed.) Citation

Didik Djunaedi,Erna Fitrini dan Ratih Sumiratiningratri. (2009). I Speak English. PT Cahaya Pustaka Raga.

Chicago Style (17th ed.) Citation

Didik Djunaedi,Erna Fitrini dan Ratih Sumiratiningratri. I Speak English. PT Cahaya Pustaka Raga, 2009.

MLA (8th ed.) Citation

Didik Djunaedi,Erna Fitrini dan Ratih Sumiratiningratri. I Speak English. PT Cahaya Pustaka Raga, 2009.

Warning: These citations may not always be 100% accurate.