Mechelen, W. van & Mellenbergh, G. J. (1997). Problems and solutions in longitudinal research: From theory to practice. International Journal of Sports Medicine, Stuttgart 18(1997)Suppl. 3, S. S238 - S245, 27 Lit..
APA-Zitierstil (7. Ausg.)Mechelen, W. v., & Mellenbergh, G. J. (1997). Problems and solutions in longitudinal research: From theory to practice International Journal of Sports Medicine.
Chicago-Zitierstil (17. Ausg.)Mechelen, W. van, und G. J. Mellenbergh. "Problems and Solutions in Longitudinal Research: From Theory to Practice." International Journal of Sports Medicine 1997.
MLA-Zitierstil (9. Ausg.)Mechelen, W. van, und G. J. Mellenbergh. "Problems and Solutions in Longitudinal Research: From Theory to Practice." International Journal of Sports Medicine, 1997.