RIYANTO, S. A Complete Grammar for Toefl Preparation: Skor toefl dapat merubah karir anda. Pustaka Pelajar.
Chicago Style (17th ed.) CitationRIYANTO, Slamet. A Complete Grammar for Toefl Preparation: Skor Toefl Dapat Merubah Karir Anda. Pustaka Pelajar.
MLA (8th ed.) CitationRIYANTO, Slamet. A Complete Grammar for Toefl Preparation: Skor Toefl Dapat Merubah Karir Anda. Pustaka Pelajar.
Warning: These citations may not always be 100% accurate.