APA

International Seminars 1968-1 : Education and Trainning for the Metal worker of 1980 P. 8. o. 1., Organisation for Economic Co-operation and Development & Organization for Economic Co-operation and Development (París). (1968). Education and training for the metal worker of 1980. París: OCDE.

Chicago

International Seminars 1968-1 : Education and Trainning for the Metal worker of 1980 París 8-11 octubre 1968, Organisation for Economic Co-operation and Development and Organization for Economic Co-operation and Development (París). 1968. Education and training for the metal worker of 1980. París: OCDE.

Harvard

International Seminars 1968-1 : Education and Trainning for the Metal worker of 1980 P. 8. o. 1., Organisation for Economic Co-operation and Development and Organization for Economic Co-operation and Development (París). (1968). Education and training for the metal worker of 1980. París: OCDE.

MLA

International Seminars 1968-1 : Education and Trainning for the Metal worker of 1980 París 8-11 octubre 1968, Organisation for Economic Co-operation and Development and Organization for Economic Co-operation and Development (París). Education and training for the metal worker of 1980. París: OCDE. 1968.