1. The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing Information;Miller;The Psychological Review,1956
2. The Survey Research Handbook;Alreck,1985
3. Handbook of Research Design and Social Measurement;Miller,1983
4. Marketing in Australia;Kotler,1983
5. Business Logistics in the Pacific Basin;Gilmour;Columbia Journal of World Business,1976