Cita APA (7th ed.)
Cross, A., & Bowden, A. (2009). Essential primary science. Open University Press.
Cita Chicago (17th ed.)
Cross, Alan, i Adrian Bowden. Essential Primary Science. Maidenhead: Open University Press, 2009.
Cita MLA (9th ed.)
Cross, Alan, i Adrian Bowden. Essential Primary Science. Open University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.