Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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