Não informado. (1934). Journal of Agriculture of the University of Puerto Rico. University of Puerto Rico, Agricultural Experiment Station.
Cita Chicago Style (17a ed.)Não informado. Journal of Agriculture of the University of Puerto Rico. Rio Piedras, Porto Rico: University of Puerto Rico, Agricultural Experiment Station, 1934.
Cita MLA (8a ed.)Não informado. Journal of Agriculture of the University of Puerto Rico. University of Puerto Rico, Agricultural Experiment Station, 1934.
Precaución: Estas citas no son 100% exactas.