Cita APA

Sohn, D. A., & Enger, E. (1993). Writing by doing: Learning to write effectively (2a. edición.). Illinois: National Textbook Company.

Citación estilo Chicago

Sohn, David A.,, y Edward Enger. Writing By Doing: Learning to Write Effectively. 2a. edición. Illinois: National Textbook Company, 1993.

Cita MLA

Sohn, David A.,, y Edward Enger. Writing By Doing: Learning to Write Effectively. 2a. edición. Illinois: National Textbook Company, 1993.