Dyfyniad APA

Trappe, T., & Tullis, G. (2005). Intelligent Business Intermediate Coursebook. England: Pearson Education Limit.

Dyfyniad Arddull Chicago

Trappe, Tonya, và Graham Tullis. Intelligent Business Intermediate Coursebook. England: Pearson Education Limit, 2005.

Dyfyniad MLA

Trappe, Tonya, và Graham Tullis. Intelligent Business Intermediate Coursebook. England: Pearson Education Limit, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.