APA-viite (7. p.)

Proud, A. (2000). Choosing and using external consultants: How to get the best value from working with your external consultants. Fenman.

Chicago-viite (17. p.)

Proud, Arthur. Choosing and Using External Consultants: How to Get the Best Value from Working with Your External Consultants. Ely: Fenman, 2000.

MLA-viite (8. p.)

Proud, Arthur. Choosing and Using External Consultants: How to Get the Best Value from Working with Your External Consultants. Fenman, 2000.