Cita APA (7th ed.)
HASSELT, V., & ET AL. (1989). HANDBOOK OF DEVELOPMENTAL AND PHYSICAL DISABILITIES. PERGAMON PRESS.
Cita Chicago (17th ed.)
HASSELT, V.B.VAN, i ET AL. HANDBOOK OF DEVELOPMENTAL AND PHYSICAL DISABILITIES. NUEVA YORK: PERGAMON PRESS, 1989.
Cita MLA (9th ed.)
HASSELT, V.B.VAN, i ET AL. HANDBOOK OF DEVELOPMENTAL AND PHYSICAL DISABILITIES. PERGAMON PRESS, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.