1. Holland, P. W. and Leinhardt, S. 1969. “‘Masking: The Structural Implications of Measurement Error in Sociometry,’”. in an unpublished paper,
2. Davis, J. A. and Leinhardt, S. 1968. “‘The Structure of Positive Interpersonal Relations in Small Groups’”. unpubl. paper,
3. Davis, J. A. 1965. “‘Boundary Relationships’”.
4. Symbolic psycho-logic: A model of attitudinal cognition