Botha, Rudolf P.
Twentieth Century Conseptions Of Language : mastering the metaphysics market / Rudolf P. Botha
Blackwell, 1992
Buku Teks SO
Pulau-Pulau terluar dan batas wilayah nasional status delimitasi batas wilayah nasional Rudolf W.Matindas,Klaas J.Villanueva
Artikel Jurnal
Vancil, David L.
Rhetoric and argumentation
Allyn and Bacon, 1993
Buku Teks
Klaiman, M.H.
Grammatical voice
Cambridge University Press , 1991
Buku Teks SO
Herrick, James A.
Argumentation: understanding and shaping arguments
Pearson custom, 1998
Buku Teks SO