APA (7th ed.) Citation

Zarzuelo, C. (2005). New science: Science, geography and history; [the learning ladder]. Santillana.

Chicago Style (17th ed.) Citation

Zarzuelo, Cristina. New Science: Science, Geography and History; [the Learning Ladder]. Madrid [u.a.]: Santillana, 2005.

MLA (9th ed.) Citation

Zarzuelo, Cristina. New Science: Science, Geography and History; [the Learning Ladder]. Santillana, 2005.