Aker, J., Ksoll, C., & Lybbert, T. (2010). ABC, 123: Can you text me now? The impact of a mobile phone literacy program on educational outcomes. University of Oxford.

Aker, J., C. Ksoll, and T. Lybbert. ABC, 123: Can You Text Me Now? The Impact of a Mobile Phone Literacy Program on Educational Outcomes. University of Oxford, 2010.

Aker, J., et al. ABC, 123: Can You Text Me Now? The Impact of a Mobile Phone Literacy Program on Educational Outcomes. University of Oxford, 2010.