APA

Puerto Rico, Hume E. P., . (1949). Some ornamental vines for the tropics. Mayagüez, P.R.]: Federal Experiment Station in Puerto Rico, United States Department of Agriculture.

Chicago

Puerto Rico, Hume Edward P, . 1949. Some ornamental vines for the tropics. Mayagüez, P.R.]: Federal Experiment Station in Puerto Rico, United States Department of Agriculture.

Harvard

Puerto Rico, Hume E. P., . (1949). Some ornamental vines for the tropics. Mayagüez, P.R.]: Federal Experiment Station in Puerto Rico, United States Department of Agriculture.

MLA

Puerto Rico, Hume Edward P, . Some ornamental vines for the tropics. Mayagüez, P.R.]: Federal Experiment Station in Puerto Rico, United States Department of Agriculture. 1949.