Howe, B. (1988). Portfolio: Case studies for business English. Teacher's guide. Longman.
Chicago Style (17th ed.) CitationHowe, Brian. Portfolio: Case Studies for Business English. Teacher's Guide. Harlow: Longman, 1988.
MLA (9th ed.) CitationHowe, Brian. Portfolio: Case Studies for Business English. Teacher's Guide. Longman, 1988.