Michael Roberts. (2014). Biology for Life Second Edition (2nd.). Oxford University Press.
Cita Chicago (17th ed.)Michael Roberts. Biology for Life Second Edition. 2nd. Oxford University Press, 2014.
Cita MLA (9th ed.)Michael Roberts. Biology for Life Second Edition. 2nd. Oxford University Press, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.