Lee, P. Y., & Lee, N. H. (2009). Teaching secondary school mathematics: A resource book (2nd ed., updated.). McGraw-Hill.
Chicago Style (17. basım) AtıfLee, Peng Yee, ve Ngan Hoe Lee. Teaching Secondary School Mathematics: A Resource Book. 2nd ed., updated. Singapore: McGraw-Hill, 2009.
MLA (9th ed.) AtıfLee, Peng Yee, ve Ngan Hoe Lee. Teaching Secondary School Mathematics: A Resource Book. 2nd ed., updated. McGraw-Hill, 2009.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..