Day, G. S., Reibstein, D. J., & Gunther, R. E. (1997). Wharton on dynamic competitive strategy. John Wiley & Sons.
Chicago Edition CitationDay, George S., David J. Reibstein, and Robert E. Gunther. Wharton on Dynamic Competitive Strategy. New York: John Wiley & Sons, 1997.
ציטוט MLADay, George S., et al. Wharton on Dynamic Competitive Strategy. John Wiley & Sons, 1997.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.