Παραπομπή APA

Schoenberg, I. E., Lê Huy Lâm,, & Trương Hoàng Duy. (1997). Focus on grammar: A basic course for reference and practice (Dùng kèm với hai băng cassette). Tp.HCM: Nxb Tp.HCM.

Παραπομπή Chicago Style

Schoenberg, Irene E., Lê Huy Lâm, και Trương Hoàng Duy. Focus On Grammar: A Basic Course for Reference and Practice (Dùng Kèm Với Hai Băng Cassette). Tp.HCM: Nxb Tp.HCM, 1997.

Παραπομπή MLA

Schoenberg, Irene E., Lê Huy Lâm, και Trương Hoàng Duy. Focus On Grammar: A Basic Course for Reference and Practice (Dùng Kèm Với Hai Băng Cassette). Tp.HCM: Nxb Tp.HCM, 1997.

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