Spence, G. (1995). How to argue and win everytime. Martin`s.
Chicago Style aipamenaSpence, Gressy. How to Argue and Win Everytime. New York: Martin`s, 1995.
MLA aipamenaSpence, Gressy. How to Argue and Win Everytime. Martin`s, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.