Phillips, T. (2013). Developing skills 2: Course book (Units 1-9; Revision 1-2; Workbook units 1- 10). Southern Court: Garnet Publishing.
Chicago Style aipamenaPhillips, Terry. Developing Skills 2: Course Book (Units 1-9; Revision 1-2; Workbook Units 1- 10). Southern Court: Garnet Publishing, 2013.
MLA aipamenaPhillips, Terry. Developing Skills 2: Course Book (Units 1-9; Revision 1-2; Workbook Units 1- 10). Southern Court: Garnet Publishing, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.