Katherine, S. et al.(2016).The troika of adult learners, lifelong learning, and mathematics :learning from research, current paradoxes, tensions and promotional strategies .Swizerland:Springer Open.
Gaya MLA
Safford-Ramus, Katherine. et al."The troika of adult learners, lifelong learning, and mathematics :learning from research, current paradoxes, tensions and promotional strategies".Swizerland:Springer Open,2016.Electronic Resource.