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