Gaya APA

Ramirez, R., Normann, R. (1994). Designing interactive strategy from value chain to value constellation / Richard Normann, Rafael Ramirez . : John Wiley n Sons.

Gaya MLA

Ramirez, Rafael., Normann, Richard. "Designing interactive strategy from value chain to value constellation / Richard Normann, Rafael Ramirez". : John Wiley n Sons, 1994. Textbook.