APA-viite (7. p.)

Christie, D. (1999). Focus on Business: Workbook / [David Christie] (New edition.). Cornelsen & Oxford.

Chicago-viite (17. p.)

Christie, David. Focus on Business: Workbook / [David Christie]. New edition. Berlin: Cornelsen & Oxford, 1999.

MLA-viite (8. p.)

Christie, David. Focus on Business: Workbook / [David Christie]. New edition. Cornelsen & Oxford, 1999.