Klassen, L. H. (1967). Methods of selecting industries for depressed areas, an introduction to feasibiligy studies. Paris: Organisation for Economic Co-operation and Development.
استشهاد بنمط شيكاغوKlassen, Leo H. Methods of Selecting Industries for Depressed Areas, an Introduction to Feasibiligy Studies. Paris: Organisation for Economic Co-operation and Development, 1967.
MLA استشهادKlassen, Leo H. Methods of Selecting Industries for Depressed Areas, an Introduction to Feasibiligy Studies. Paris: Organisation for Economic Co-operation and Development, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.