Petrick, M., & Weingarten, P. (2004). The role of agriculture in Central and Eastern European rural development: engine of change or Social buffer?: Studies on the agricultural and food sector in Central and Eastern Europe. Vol. 25.
Chicago-referens (17:e uppl.)Petrick, Martin, och Peter Weingarten. The Role of Agriculture in Central and Eastern European Rural Development: Engine of Change or Social Buffer?: Studies on the Agricultural and Food Sector in Central and Eastern Europe. Vol. 25. 2004.
MLA-referens (9:e uppl.)Petrick, Martin, och Peter Weingarten. The Role of Agriculture in Central and Eastern European Rural Development: Engine of Change or Social Buffer?: Studies on the Agricultural and Food Sector in Central and Eastern Europe. Vol. 25. 2004.