Soars, L. &. J. (2019). Headway: Beginner teacher's guide/ (Fifth edition.). Oxford University Press.
Chicagoスタイル(17版)引用形式Soars, Liz & John. Headway: Beginner Teacher's Guide/. Fifth edition. UK: Oxford University Press, 2019.
MLA(9版)引用形式Soars, Liz & John. Headway: Beginner Teacher's Guide/. Fifth edition. Oxford University Press, 2019.
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