Citazione APA

Virginia Polytechnic Institute and State University & Virginia Agricultural Experiment Station. (1981). Bulletin. Virginia Polytechnic Institute and State University.

Stile di citazione Chicago

Virginia Polytechnic Institute and State University e Virginia Agricultural Experiment Station. Bulletin. Blacksburg: Virginia Polytechnic Institute and State University, 1981.

Citazione MLA

Virginia Polytechnic Institute and State University e Virginia Agricultural Experiment Station. Bulletin. Virginia Polytechnic Institute and State University, 1981.