Cita APA (7a ed.)

Pugh, S. (2009). Wicked cool Ruby scripts: Useful scripts that solve difficult problems. No Starch Press.

Cita Chicago Style (17a ed.)

Pugh, Steve. Wicked Cool Ruby Scripts: Useful Scripts That Solve Difficult Problems. San Francisco: No Starch Press, 2009.

Cita MLA (9a ed.)

Pugh, Steve. Wicked Cool Ruby Scripts: Useful Scripts That Solve Difficult Problems. No Starch Press, 2009.