Cita APA (7a ed.)

Pytel, C., Yurek, J., & Marshall, K. (2007). Pro Active Record: Databases with Ruby and Rails (1st ed. 2007.). Apress : Imprint: Apress.

Cita Chicago Style (17a ed.)

Pytel, Chad, Jonathan Yurek, y Kevin Marshall. Pro Active Record: Databases with Ruby and Rails. 1st ed. 2007. Berkeley, CA: Apress : Imprint: Apress, 2007.

Cita MLA (8a ed.)

Pytel, Chad, et al. Pro Active Record: Databases with Ruby and Rails. 1st ed. 2007. Apress : Imprint: Apress, 2007.