Não informado. (1889). Bulletin of the Virginia Agricultural Experiment Station. Virginia Polytechnic Institute.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of the Virginia Agricultural Experiment Station. Blacksburg, Va: Virginia Polytechnic Institute, 1889.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of the Virginia Agricultural Experiment Station. Virginia Polytechnic Institute, 1889.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.