Sarah Jones. (1998). Getting ahead: A communication skills course for Business English. Hà Nội: Thống Kê.
Chicago-tyylinen lähdeviittausSarah Jones. Getting Ahead: A Communication Skills Course for Business English. Hà Nội: Thống Kê, 1998.
MLA-viiteSarah Jones. Getting Ahead: A Communication Skills Course for Business English. Hà Nội: Thống Kê, 1998.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.