(1989). Who's who in science in Europe: A biographical guide in science,technology, agriculture, and medicine. Volume 3 - European Community countries G - Z (sixth edition.). Longman.
Παραπομπή σε μορφή Chicago (17η εκδ.)Who's Who in Science in Europe: A Biographical Guide in Science,technology, Agriculture, and Medicine. Volume 3 - European Community Countries G - Z. sixth edition. Harlow: Longman, 1989.
Παραπομπή σε μορφή MLA (8th εκδ.)Who's Who in Science in Europe: A Biographical Guide in Science,technology, Agriculture, and Medicine. Volume 3 - European Community Countries G - Z. sixth edition. Longman, 1989.
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