The existing three volumes constitute the official Hague Conference Guide to Good Practice in dealing with international child abduction cases under the 1980 Hague Convention. Part IV of the guide is more technical and detailed in its approach to the subject-matter than previous Parts reflecting the complexity and diversity of the approaches adopted by States to the issue of enforcement. It is intended to assist Contracting States in implementing an efficient system to enforce Hague return orders in the best interests of the children concerned. The guide is also available in French (978 184661 2428) and Spanish (978 184661 2435).