APA (7th ed.) Citation

Carter, W. E. (1980). Cannabis in Costa Rica: A study of chronic marihuana use. Institute for the Study of Human Issues.

Chicago Style (17th ed.) Citation

Carter, William E. Cannabis in Costa Rica: A Study of Chronic Marihuana Use. Philadelphia: Institute for the Study of Human Issues, 1980.

MLA (9th ed.) Citation

Carter, William E. Cannabis in Costa Rica: A Study of Chronic Marihuana Use. Institute for the Study of Human Issues, 1980.