Attitude Research Conference, 5th, Madrid, American Marketing Association. Marketing Research Division, & Levine, P. (1975). Attitude research bridges the Atlantic: Proceedings from the conference entitled Attitude research bridges the Atlantic, held in Madrid, Spain, February 1973. American Marketing Association.

Attitude Research Conference, 5th, Madrid, American Marketing Association. Marketing Research Division, и Philip Levine. Attitude Research Bridges the Atlantic: Proceedings from the Conference Entitled Attitude Research Bridges the Atlantic, Held in Madrid, Spain, February 1973. Chicago: American Marketing Association, 1975.

Attitude Research Conference, 5th, Madrid, et al. Attitude Research Bridges the Atlantic: Proceedings from the Conference Entitled Attitude Research Bridges the Atlantic, Held in Madrid, Spain, February 1973. American Marketing Association, 1975.