Dyfyniad APA
WORTIS, J. (1998). MENTAL RETARDATION AND DEVELOPMENTAL DISABILITIES. AN ANNUAL REVIEW. VOLS. II, III, IV, V, VI, VII, VIII, IX, X, XI, XII,13. BRUNNER AND MAZEL.
Dyfyniad Arddull Chicago
WORTIS, J. MENTAL RETARDATION AND DEVELOPMENTAL DISABILITIES. AN ANNUAL REVIEW. VOLS. II, III, IV, V, VI, VII, VIII, IX, X, XI, XII,13. NUEVA YORK: BRUNNER AND MAZEL, 1998.
Dyfyniad MLA
WORTIS, J. MENTAL RETARDATION AND DEVELOPMENTAL DISABILITIES. AN ANNUAL REVIEW. VOLS. II, III, IV, V, VI, VII, VIII, IX, X, XI, XII,13. BRUNNER AND MAZEL, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.