APA (7th ed.) Zitazioa

Freund, J. E., & Williams, F. J. (1969). Modern business statics. Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Freund, John E., eta Frank Jefferson Williams. Modern Business Statics. Englewood Cliffs: Prentice-Hall, 1969.

MLA (9th ed.) Zitazioa

Freund, John E., eta Frank Jefferson Williams. Modern Business Statics. Prentice-Hall, 1969.