Swales, John M., author
Cambridge University Press , 1990
Buku Teks
Artikel Jurnal
Artikel Jurnal
Oentarini Tjandra, author
Fakultas Kedokteran Universitas Indonesia, 2007
UI - Tesis (Membership)
Kostiner, Edward
Barron's Educational Series Inc. , 1992
Buku Teks