The epistle of Jude.

One canonical catholic epistle.

Attributed author(s).

Text(s) available.
Epistle of Jude 1 (on site, Greek only).
Online Greek Bible (Greek only).
Bible Gateway (English only).
HTML Bible: Jude 1 (Greek and English).
HTML Bible: Jude 1 (Latin Vulgate only).
Zhubert (Greek and English).
Kata Pi: Jude 1 (Greek and English).
Sacred Texts: Jude 1 (polyglot).

Useful links.
Jude at the NT Gateway.
Jude at Early Christian Writings.
Jude by Daniel Wallace.
Jude in the Catholic Encyclopedia.
Jude at Kata Pi (R. M. Grant).
ECW e-Catena: Jude 1.

Only one canonical epistle is attributed to Jude the brother of the Lord and of James. This epistle manages, for all its brevity, to cite or allude to two books usually deemed noncanonical, to wit, either the Ascension or Testament of Moses in verse 9 and the Enochic literature (refer to 1 Enoch 1.9) in verse 14.