Παραπομπή APA

Cotton, D., Grath, A. M., Nguyễn Thị Thanh Hà,, & Tôn Nữ Quỳnh Tiên. (1999). Terms of trade spoken English for international business. Tp.HCM: Thống kê.

Παραπομπή Chicago Style

Cotton, David., Ann Mc Grath, Nguyễn Thị Thanh Hà, και Tôn Nữ Quỳnh Tiên. Terms of Trade Spoken English for International Business. Tp.HCM: Thống kê, 1999.

Παραπομπή MLA

Cotton, David., Ann Mc Grath, Nguyễn Thị Thanh Hà, και Tôn Nữ Quỳnh Tiên. Terms of Trade Spoken English for International Business. Tp.HCM: Thống kê, 1999.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.