APA (7th ed.) Zitazioa
Johnson, T. E. (1983). Investment principles (2nd ed.). Prentice-Hall.
Chicago Style (17th ed.) Zitazioa
Johnson, Timothy E. Investment Principles. 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1983.
MLA (9th ed.) Zitazioa
Johnson, Timothy E. Investment Principles. 2nd ed. Prentice-Hall, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.