Citazione Stile APA (7a Edizione)

Caunedo, S. (2006). New science: Science, geography and history; [the learning ladder]. Santillana.

Citazione stile Chigago Style (17a edizione)

Caunedo, Silvia. New Science: Science, Geography and History; [the Learning Ladder]. Madrid [u.a.]: Santillana, 2006.

Citatione MLA (9a ed.)

Caunedo, Silvia. New Science: Science, Geography and History; [the Learning Ladder]. Santillana, 2006.