APA (7th ed.) Zitazioa

Flowers, T. H. (1976). Introduction to exchange systems. John Wiley.

Chicago Style (17th ed.) Zitazioa

Flowers, T. H. Introduction to Exchange Systems. Londres: John Wiley, 1976.

MLA (9th ed.) Zitazioa

Flowers, T. H. Introduction to Exchange Systems. John Wiley, 1976.