Erni, S., N., Sidatajudi, S.(2003).Better English : things they probably don't teach you in class / Sidatajudi Siauw; editor, Ninik Erni Siauw (Cet.1).Jakarta:Puspa Swara.
Gaya MLA
Siauw, Ninik, Erni., Siauw, Sidatajudi."Better English : things they probably don't teach you in class / Sidatajudi Siauw; editor, Ninik Erni Siauw".Cet.1Jakarta:Puspa Swara,2003.Textbook.