1. A.A. Ahmed, "Channel Control in International Markets," European Journal of Marketing, 11 (4, 1977), 327–336.
2. M. Aiken and J. Hage, "Organizational Interdependence and Intro-organizational Structure," American Sociological Review, 33 (December, 1968), 912–930.
3. H.E. Aldrich, "An Interorganizational Dependency Perspective on Relations Between the Employment Service and its Organizational Set," in The Management of Organizational Design, ed. R.H. Kilman, L.R. Pondy and D.P. Slevin (New York, North Holland), pp. 231–266.
4. Betro Trust, Concentration on Key Markets (London: Royal Society of Arts, 1975).
5. Canadian Trade Index 1978 (Toronto: Canadian Manufacturers’ Association, 1978).