Abbs, B., & Freebairn, I. (1997). Blueprint one (20a. ed.). Longman.
Chicagoスタイル(17版)引用形式Abbs, Brian, , Ingrid Freebairn. Blueprint One. 20a. ed. Essex: Longman, 1997.
MLA(9版)引用形式Abbs, Brian, , Ingrid Freebairn. Blueprint One. 20a. ed. Longman, 1997.
警告: この引用は必ずしも正確ではありません.