APA (7. basım) Alıntı
Lappan, G., Smith, M. S., & Jones, E. Rich and Engaging Mathematical Tasks: Grades 5-9. National Council of Teachers of Mathematics.
Chicago Style (17. basım) Atıf
Lappan, Glenda, Margaret S. Smith, ve Elizabeth Jones. Rich and Engaging Mathematical Tasks: Grades 5-9. Reston, EUA: National Council of Teachers of Mathematics.
MLA (9th ed.) Atıf
Lappan, Glenda, et al. Rich and Engaging Mathematical Tasks: Grades 5-9. National Council of Teachers of Mathematics.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..