STEVENS ROBERT E. (2002). MARKETING PLANNING GUIDE. JAICO PUBLISHING HOUSE.
Chicago Style aipamenaSTEVENS ROBERT E. MARKETING PLANNING GUIDE. MUMBAI: JAICO PUBLISHING HOUSE, 2002.
MLA aipamenaSTEVENS ROBERT E. MARKETING PLANNING GUIDE. JAICO PUBLISHING HOUSE, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.