Frazier, L., & Mills, R. Northstar: Listening and speaking (3a ed.).
Chicagoスタイル(17版)引用形式Frazier, Laurice, , Robin Mills. Northstar: Listening and Speaking. 3a ed.
MLA(8版)引用形式Frazier, Laurice, , Robin Mills. Northstar: Listening and Speaking. 3a ed.
警告: この引用は必ずしも正確ではありません.