Barraclough, S. L. (1982). A preliminary analysis of the Nicaraguan food system: (a progress report of research being carried out under UNRISD's project "Food Systems and Society"). United Nations Research Institute for Social Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Barraclough, Solon Lovett. A Preliminary Analysis of the Nicaraguan Food System: (a Progress Report of Research Being Carried Out Under UNRISD's Project "Food Systems and Society"). Geneva: United Nations Research Institute for Social Development, 1982.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Barraclough, Solon Lovett. A Preliminary Analysis of the Nicaraguan Food System: (a Progress Report of Research Being Carried Out Under UNRISD's Project "Food Systems and Society"). United Nations Research Institute for Social Development, 1982.