Cita APA (7th ed.)
Johnson, T. E. (1983). Investment principles (2nd ed.). Prentice-Hall.
Cita Chicago (17th ed.)
Johnson, Timothy E. Investment Principles. 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1983.
Cita MLA (9th ed.)
Johnson, Timothy E. Investment Principles. 2nd ed. Prentice-Hall, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.