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Silalahi, Rentauli Mariah (2013) The Reliability of TOEFl ITP scores depict the test taker,s overall English abilities. Polyglot, 9 (1). pp. 15-28. ISSN 1907-6134
Silalahi, Rentauli Mariah (2013) Common gramatical errors in spoken english of university students in an it university. Polyglot, 8 (1). pp. 16-32. ISSN 1907-6134
Silalahi, Rentauli Mariah (2011) Evaluating the English test of national examination for SMA. Polyglot, 5 (1). pp. 33-47. ISSN 1907-6134