Cita APA (7th ed.)
ELLIS, N., & BRAY, N. (1998). INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION, VOLS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12. ACADEMIC PRESS.
Cita Chicago (17th ed.)
ELLIS, N.R, i N.W BRAY. INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION, VOLS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12. NUEVA YORK: ACADEMIC PRESS, 1998.
Cita MLA (9th ed.)
ELLIS, N.R, i N.W BRAY. INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION, VOLS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12. ACADEMIC PRESS, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.