Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.