Cita APA (7th ed.)
Sandefur, J. Elementary Mathematical Modeling: A Dynamic Approach. Brooks Cole.
Cita Chicago (17th ed.)
Sandefur, James. Elementary Mathematical Modeling: A Dynamic Approach. Pacific Grove, EUA: Brooks Cole.
Cita MLA (9th ed.)
Sandefur, James. Elementary Mathematical Modeling: A Dynamic Approach. Brooks Cole.
Atenció: Aquestes cites poden no estar 100% correctes.