Cita APA (7th ed.)
ELLIS, N., & BRAY, N. (1988). INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION. VOLUME 14. ACADEMIC PRESS.
Cita Chicago (17th ed.)
ELLIS, N.R, i N.W BRAY. INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION. VOLUME 14. Londres: ACADEMIC PRESS, 1988.
Cita MLA (9th ed.)
ELLIS, N.R, i N.W BRAY. INTERNATIONAL REVIEW OF RESEARCH IN MENTAL RETARDATION. VOLUME 14. ACADEMIC PRESS, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.