Maurer, J., Jay, M., Lê Huy Lâm, & Phạm Tấn Quyền. (1997). Focus on grammar: An advanced course for reference and practice. Tp.HCM: Nxb. Tp.HCM.
استشهاد بنمط شيكاغوMaurer, Jay, Maurer Jay, Lê Huy Lâm, و Phạm Tấn Quyền. Focus On Grammar: An Advanced Course for Reference and Practice. Tp.HCM: Nxb. Tp.HCM, 1997.
MLA استشهادMaurer, Jay, Maurer Jay, Lê Huy Lâm, و Phạm Tấn Quyền. Focus On Grammar: An Advanced Course for Reference and Practice. Tp.HCM: Nxb. Tp.HCM, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.