Cita APA (7a ed.)
Scher, D. Exploring Precalculus with The Geometer's Sketchpad. Key Curriculum Press.
Cita estilo Chicago (17a ed.)
Scher, Daniel. Exploring Precalculus with The Geometer's Sketchpad. Emeryville, EUA: Key Curriculum Press.
Cita MLA (9a ed.)
Scher, Daniel. Exploring Precalculus with The Geometer's Sketchpad. Key Curriculum Press.
Precaución: Estas citas no son 100% exactas.