Teo Francis. Maths Problem-Solving Stratergies-3. Singapore Asia Pub.
Cita Chicago (17th ed.)Teo Francis. Maths Problem-Solving Stratergies-3. Singapore Asia Pub.
Cita MLA (9th ed.)Teo Francis. Maths Problem-Solving Stratergies-3. Singapore Asia Pub.
Atenció: Aquestes cites poden no estar 100% correctes.