APA (7th ed.) Zitazioa
Lambert, C. (1988). The business presentations workbook. Prentice Hall.
Chicago Style (17th ed.) Zitazioa
Lambert, Clark. The Business Presentations Workbook. Englewood Cliffs, N.J.: Prentice Hall, 1988.
MLA (9th ed.) Zitazioa
Lambert, Clark. The Business Presentations Workbook. Prentice Hall, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.