1. Acredolo, C. (1989). ’Assessing children’s understanding of time, speed and distance interrelations’, in I. Levin and D. Zakay (eds.), Time and Human Cognition: A life-span perspective, Elsevier, Amsterdam, pp. 219 - 257.
2. Acredolo, C., Adams, A., and Schmid, J. (1984). ’On the understanding of relationships between speed, duration and distance’, Child Development, 55. 1515 - 2159.
3. Acredolo, C., and Schmid, J. (1981). The understanding of relative speeds, distances and durations of movement’, Developmental Psychology, 17, 490 - 493.
4. AI-Fakhri, S. (1977). The development of the concept of speed among Iraqi children’, in P. R. Dasen (ed.), Piagetian Psychology: Cross Cultural Contributions, Gardner Press, New York.
5. Arlin, M. (1986a). ’The effects of quantity and depth of processing on children’s time perception’, Journal of Experimental Child Psychology. 42, 84 - 98.