Cita APA (7a ed.)

Patterson, J., & Ledwidge, M. (2007). Step on a crack. HeadlinePublishing Group.

Cita Chicago Style (17a ed.)

Patterson, James, y Michael Ledwidge. Step on a Crack. London: HeadlinePublishing Group, 2007.

Cita MLA (9a ed.)

Patterson, James, y Michael Ledwidge. Step on a Crack. HeadlinePublishing Group, 2007.