Surat sug : letters of the Sultanate of Sulu /
[compiled by Samuel K. Tan].
- Manila, Philippines : National Historical Institute, 2005.
- 2 v. 319 pages : illustrations ; 24 cm.
v. 1. Kasultanan -- v. 2. Kadatuan, kahadjian, kabanuwahan, kaginisan.
Critical material in English; letters in Tausug, with accompanying English translation (Tausug in roman and Jawi).