(2008). Revolish Toefl IBT Prep Four Skill Reading, Writing, Listening and Speaking, level 2 (Kèm theo CD1-2/897-00).
シカゴスタイル引用形Revolish Toefl IBT Prep Four Skill Reading, Writing, Listening and Speaking, Level 2 (Kèm Theo CD1-2/897-00). 2008.
MLA引用形式Revolish Toefl IBT Prep Four Skill Reading, Writing, Listening and Speaking, Level 2 (Kèm Theo CD1-2/897-00). 2008.
警告: この引用は必ずしも正確ではありません.