Yip, Po-Ching
Basic Chinese : a grammar and workbook
Routledge, 2009
 Buku Teks
Oosterhoff, Jenneke A.
Basic dutch : a grammar and workbook
Routledge, 2009
 Buku Teks
Byon, Andrew Sangpil
Basic korean : a grammar and workbook
Routledge, Taylor & Francis Group, 2009
 Buku Teks SO
Murray, John D. (John Damian)
Intermediate Russian: a grammar and workbook
Routledge, 2001
 Buku Teks
Miell, Anna
Intermediate German : a grammar and workbook
Routledge, 2006
 Buku Teks SO