Graham, J. R., & Lilly, R. S. (1984). Psychological testing. Prentice-Hall.
Cita Chicago (17th ed.)Graham, John R., i Roy S. Lilly. Psychological Testing. Englewood Cliffs, N.J: Prentice-Hall, 1984.
Cita MLA (9th ed.)Graham, John R., i Roy S. Lilly. Psychological Testing. Prentice-Hall, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.