Hess, D. W. (1979). Pioneering in San Julian: A study of adaptive strategy formation by migrant farmers in eastern Bolivia. [s.l. :]: Ph. D. University of Pittsburgh.
استشهاد بنمط شيكاغوHess, David W. Pioneering in San Julian: A Study of Adaptive Strategy Formation By Migrant Farmers in Eastern Bolivia. [s.l. :]: Ph. D. University of Pittsburgh, 1979.
MLA استشهادHess, David W. Pioneering in San Julian: A Study of Adaptive Strategy Formation By Migrant Farmers in Eastern Bolivia. [s.l. :]: Ph. D. University of Pittsburgh, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.