The book of Jonah.

Counted among the prophets.

Attributed author(s).
Anonymous.

Text(s) available.
None on site.
CCEL: Jonah (Hebrew only).
Swete LXX (Greek only).
Bible Gateway (English only).
HTML Bible: Jonah 1, 2, 3, 4 (Hebrew and English).
HTML Bible: Jonah 1, 2, 3, 4 (Latin Vulgate only).
Zhubert (Greek and English).
Kata Pi BHS: Jonah 1, 2, 3, 4 (Hebrew and English).
Kata Pi LXX: Jonah 1, 2, 3, 4 (Greek and English).
Kata Pi LXX: Ode 5 (prayer of Jonah).
Sacred Texts: Jonah 1, 2, 3, 4 (polyglot).
Sacred Texts: Ode 6 (prayer of Jonah).

Useful links.
Jonah at the OT Gateway.
Jonah in the Jewish Encyclopedia.
Jonah at Kata Pi (Oesterly and Robinson).
Jonah from the Plymouth Brethren.

The book of Jonah ranks among the latter prophets in the Jewish scriptures.

The book was originally written in Hebrew, but the ancient Greek translation known as the Septuagint (abbreviated LXX) is also a very important witness to the text.