Παραπομπή σε μορφή APA (7η εκδ.)

Digital Equipment Corporation. (1989). Systems and options catalogue - supplement {Catalogue}: Winter 1989 (European edition.). European Field Communications Group.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Digital Equipment Corporation. Systems and Options Catalogue - Supplement {Catalogue}: Winter 1989. European edition. Reading: European Field Communications Group, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Digital Equipment Corporation. Systems and Options Catalogue - Supplement {Catalogue}: Winter 1989. European edition. European Field Communications Group, 1989.