Cita APA (7a ed.)
Cross, A., & Bowden, A. (2009). Essential primary science. Open University Press.
Cita Chicago Style (17a ed.)
Cross, Alan, y Adrian Bowden. Essential Primary Science. Maidenhead: Open University Press, 2009.
Cita MLA (9a ed.)
Cross, Alan, y Adrian Bowden. Essential Primary Science. Open University Press, 2009.
Precaución: Estas citas no son 100% exactas.