James, R., & Ric James. (2007). Letter perfect. Columbus, Ohio: SRA/McGraw-Hill.
シカゴスタイル引用形James, Ric, , Ric James. Letter Perfect. Columbus, Ohio: SRA/McGraw-Hill, 2007.
MLA引用形式James, Ric, , Ric James. Letter Perfect. Columbus, Ohio: SRA/McGraw-Hill, 2007.
警告: この引用は必ずしも正確ではありません.