FRAUSE BOB. (1994). ENVIRONMENTAL MARKETING IMPERATIVE. PROBUS PUBLICATIONS.
Chicago Style aipamenaFRAUSE BOB. ENVIRONMENTAL MARKETING IMPERATIVE. CHICAGO: PROBUS PUBLICATIONS, 1994.
MLA aipamenaFRAUSE BOB. ENVIRONMENTAL MARKETING IMPERATIVE. PROBUS PUBLICATIONS, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.