Watt, G. T., & Watt, W. C. Codes: Gavin T. Watt. William C. Watt. [Semiotik, 1].(1997).
Cita Chicago (17th ed.)Watt, Gavin T., i William C. Watt. "Codes: Gavin T. Watt. William C. Watt." [Semiotik, 1].(1997) .
Cita MLA (8th ed.)Watt, Gavin T., i William C. Watt. "Codes: Gavin T. Watt. William C. Watt." [Semiotik, 1].(1997), .
Atenció: Aquestes cites poden no estar 100% correctes.