Piper, S., & Birkett, G. (2009). Ready, steady, grow! Lion Children's.
Cita Chicago Style (17a ed.)Piper, Sophie, y Georgie Birkett. Ready, Steady, Grow! Oxford, England: Lion Children's, 2009.
Cita MLA (8a ed.)Piper, Sophie, y Georgie Birkett. Ready, Steady, Grow! Lion Children's, 2009.
Precaución: Estas citas no son 100% exactas.