Singer, J. D., & Willett, J. B. (2003). Applied longitudinal data analysis: Modeling change and event occurrence. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Singer, Judith D., agus John B. Willett. Applied Longitudinal Data Analysis: Modeling Change and Event Occurrence. Oxford ; New York: Oxford University Press, 2003.
Lua MLA (8ú heag.)Singer, Judith D., agus John B. Willett. Applied Longitudinal Data Analysis: Modeling Change and Event Occurrence. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.