Gennard, J. (1976). Economic and technologicl environments 3. Open University Press.
Chicago Edition CitationGennard, John. Economic and Technologicl Environments 3. England: Open University Press, 1976.
MLA引文Gennard, John. Economic and Technologicl Environments 3. Open University Press, 1976.
警告：这些引文格式不一定是100％准确.