Puerto Rico Agricultural Experiment Station. (1939). Insects and mite found on cotton in Puerto Rico, with notes on their economic importance and natural enemies. [s.n.].
Chicago Style (17th ed.) CitationPuerto Rico Agricultural Experiment Station. Insects and Mite Found on Cotton in Puerto Rico, with Notes on Their Economic Importance and Natural Enemies. [Washington]: [s.n.], 1939.
MLA (9th ed.) CitationPuerto Rico Agricultural Experiment Station. Insects and Mite Found on Cotton in Puerto Rico, with Notes on Their Economic Importance and Natural Enemies. [s.n.], 1939.
Warning: These citations may not always be 100% accurate.