Cita APA (7th ed.)

Carroll, J. A., & Wilson, E. E. (2012). Four by four: Practical methods for writing persuasively. Libraries Unlimited.

Cita Chicago (17th ed.)

Carroll, Joyce Armstrong, i Edward E. Wilson. Four by Four: Practical Methods for Writing Persuasively. Santa Barbara, CA: Libraries Unlimited, 2012.

Cita MLA (9th ed.)

Carroll, Joyce Armstrong, i Edward E. Wilson. Four by Four: Practical Methods for Writing Persuasively. Libraries Unlimited, 2012.