Cita APA (7th ed.)

Keppel, G. (1991). Design and analysis: A researcher's handbook (3rd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Keppel, Geoffrey. Design and Analysis: A Researcher's Handbook. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1991.

Cita MLA (9th ed.)

Keppel, Geoffrey. Design and Analysis: A Researcher's Handbook. 3rd ed. Prentice-Hall, 1991.

Atenció: Aquestes cites poden no estar 100% correctes.