Cita APA

Caldwell, I., & Thomason, D. (2006). A regra de quatro. Sic.

Citación estilo Chicago

Caldwell, Ian, and Dustin Thomason. A Regra De Quatro. Sic, 2006.

Cita MLA

Caldwell, Ian, and Dustin Thomason. A Regra De Quatro. Sic, 2006.

Warning: These citations may not always be 100% accurate.