References
- Mealiea, W. L.; Farley, F. H., “Birth Order and Expressed Fear,” proceedings of the 79th Annual Meeting, American Psychological Association, 1971, pp. 239–240.
- Sampson, E. E., “The Study of Ordinal Position: Antecedents and Outcomes“, in Maher, B. (ed.), Progress in Experimental Personality Research, Academic Press, New York, 1965.
- Sivatko, J. R., “Correspondence Instruction,” in Ebel, R. (ed.), Encyclopedia of Educational Research, Macmillan, New York, 1969.
- Sutton-Smith, B.; Rosenberg, B. G., The Sibling, Holt, Rinehart, and Winston, New York, 1970.