Louwes, S. L. (1967). Conversion factors used by the EEC countries reporting fishery statistical data to the Statistical Office of the European Communities. Food and Agriculture Organization of the United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Louwes, S. L. Conversion Factors Used by the EEC Countries Reporting Fishery Statistical Data to the Statistical Office of the European Communities. Rome: Food and Agriculture Organization of the United Nations, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Louwes, S. L. Conversion Factors Used by the EEC Countries Reporting Fishery Statistical Data to the Statistical Office of the European Communities. Food and Agriculture Organization of the United Nations, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.