Harman, O'Donnell and Henninger Associates, Inc. (1961). New approaches to residential land development: A study of concepts and innovations. Urban Land Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harman, O'Donnell and Henninger Associates, Inc. New Approaches to Residential Land Development: A Study of Concepts and Innovations. [Washington: Urban Land Institute, 1961.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Harman, O'Donnell and Henninger Associates, Inc. New Approaches to Residential Land Development: A Study of Concepts and Innovations. Urban Land Institute, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.