Παραπομπή σε μορφή APA (7η εκδ.)

Hughes, T., & William, T. (1991). Quality assurance: A framework to build on. BSP Professional Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hughes, Terry, και Trefor William. Quality Assurance: A Framework to Build on. Oxford: BSP Professional Books, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hughes, Terry, και Trefor William. Quality Assurance: A Framework to Build on. BSP Professional Books, 1991.