Stuart J. Murphy. (1996). "Ready, Set, Hop! (MathStart 3)". HarperCollins.
Citación estilo ChicagoStuart J. Murphy. "Ready, Set, Hop! (MathStart 3)". HarperCollins, 1996.
Cita MLAStuart J. Murphy. "Ready, Set, Hop! (MathStart 3)". HarperCollins, 1996.
Warning: These citations may not always be 100% accurate.