1. Belk, R. W. (1982). Effects of gift-giving involvement on gift selection strategies. Advances in Consumer Research, 9, 408-412.
2. Cheal, D. J. (1986). The Social Dimensions of Gift Behaviour. Journal of Social and Personal Relationships, 3, 423-439.
3. 電通マーケティング戦略研究会(編)(1987). 「贈る心」のマーケティング 日本経済新聞社
4. DeVere, S. P., Scott, C. D., & Shulby, W. D. (1983). Consumer perceptions of gift-giving occasions: Attribute saliency and structure. Advances in Consumer Research, 10, 185-190.
5. The biplot graphic display of matrices with application to principal component analysis