Klaassen, L. H. (1968). Social amenities in area economic growth: An analysis of methods of defining needs. Paris: O. E. C. D., Inc.
استشهاد بنمط شيكاغوKlaassen, L. H. Social Amenities in Area Economic Growth: An Analysis of Methods of Defining Needs. Paris: O. E. C. D., Inc, 1968.
MLA استشهادKlaassen, L. H. Social Amenities in Area Economic Growth: An Analysis of Methods of Defining Needs. Paris: O. E. C. D., Inc, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.