SUGIONO, L. (1993). A reference grammar for english course, beginners, SMA student, english teachers. Andi Offset.
芝加哥风格引文SUGIONO, L.Gito. A Reference Grammar for English Course, Beginners, SMA Student, English Teachers. Yogyakarta: Andi Offset, 1993.
MLA引文SUGIONO, L.Gito. A Reference Grammar for English Course, Beginners, SMA Student, English Teachers. Andi Offset, 1993.
警告：这些引文格式不一定是100％准确.