Virginia Polytechnic Institute and State University & Virginia Agricultural Experiment Station. (1981). Bulletin. Virginia Polytechnic Institute and State University.
Čikaški stil citiranja (17. izdanje)Virginia Polytechnic Institute and State University i Virginia Agricultural Experiment Station. Bulletin. Blacksburg: Virginia Polytechnic Institute and State University, 1981.
MLA način citiranja (8. izdanje)Virginia Polytechnic Institute and State University i Virginia Agricultural Experiment Station. Bulletin. Virginia Polytechnic Institute and State University, 1981.
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