Howatt, A. P. R., Webb, J., & Knight, M. (1979). A modern course in business English (New ed., 2. ed., reprint.). Cornelsen [u.a.].
Chicago Style (17th ed.) CitationHowatt, Anthony P. R., John Webb, and Michael Knight. A Modern Course in Business English. New ed., 2. ed., reprint. Berlin [u.a.]: Cornelsen [u.a.], 1979.
MLA (9th ed.) CitationHowatt, Anthony P. R., et al. A Modern Course in Business English. New ed., 2. ed., reprint. Cornelsen [u.a.], 1979.
Warning: These citations may not always be 100% accurate.