Christopher, M. (1972). Marketing below-the-line. George Allen & Unwin.
Chicago Style aipamenaChristopher, Martin. Marketing Below-the-line. London: George Allen & Unwin, 1972.
MLA aipamenaChristopher, Martin. Marketing Below-the-line. George Allen & Unwin, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.