Brieger, N. (1989). Early business contacts: Materials for developing listening and speaking skills for students of business English. Prentice Hall International UK.
Cita Chicago (17th ed.)Brieger, Nick. Early Business Contacts: Materials for Developing Listening and Speaking Skills for Students of Business English. United Kingdom: Prentice Hall International UK, 1989.
Cita MLA (9th ed.)Brieger, Nick. Early Business Contacts: Materials for Developing Listening and Speaking Skills for Students of Business English. Prentice Hall International UK, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.