Παραπομπή σε μορφή APA (7η εκδ.)

Burr, W. E. (1991). Security in ISDN. U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Burr, William E. Security in ISDN. Gaithersburg, MD : Washington, DC: U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

Burr, William E. Security in ISDN. U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1991.