Virginia Polytechnic Institute and State University & Virginia Agricultural Experiment Station. (1981). Bulletin. Virginia Polytechnic Institute and State University.
Chicagoスタイル(17版)引用形式Virginia Polytechnic Institute and State University , Virginia Agricultural Experiment Station. Bulletin. Blacksburg: Virginia Polytechnic Institute and State University, 1981.
MLA(8版)引用形式Virginia Polytechnic Institute and State University , Virginia Agricultural Experiment Station. Bulletin. Virginia Polytechnic Institute and State University, 1981.
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