George S. Day

Marketing Research 7th Ed.

By David A. Aaker, V. Kumar, George S. Day

Marketing Research

By David A. Aaker, George S. Day

Essentials of Marketing Research

By V. Kumar, David A. Aaker, George S. Day

Analysis for Strategic Market Decisions

By George S. Day

Wharton on Dynamic Competitive Strategy

By George S. Day, David J. Reibstein