Watts, R. (1972). Businessman's guide to marketing. Business books.
Chicago Style aipamenaWatts, Reginald. Businessman's Guide to Marketing. London: Business books, 1972.
MLA aipamenaWatts, Reginald. Businessman's Guide to Marketing. Business books, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.