APA (7th ed.) Citation

Tan, S. K. (2005). Surat sug: Letters of the sultanate of Sulu. National Historical Institute.

Chicago Style (17th ed.) Citation

Tan, Samuel Kong. Surat Sug: Letters of the Sultanate of Sulu. Manila: National Historical Institute, 2005.

MLA (9th ed.) Citation

Tan, Samuel Kong. Surat Sug: Letters of the Sultanate of Sulu. National Historical Institute, 2005.