APA (7th ed.) Zitazioa
Samson, T. (2010). Business english. Tata McGraw Hill Education Pvt. Ltd.
Chicago Style (17th ed.) Zitazioa
Samson, T. Business English. New Delhi: Tata McGraw Hill Education Pvt. Ltd, 2010.
MLA (9th ed.) Zitazioa
Samson, T. Business English. Tata McGraw Hill Education Pvt. Ltd, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.