Fong, N. S. (2005). Mathematics in action (EM1/2). Pearson Education.
Cita Chicago (17th ed.)Fong, Ng Swee. Mathematics in Action (EM1/2). Singapore: Pearson Education, 2005.
Cita MLA (8th ed.)Fong, Ng Swee. Mathematics in Action (EM1/2). Pearson Education, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.