APA (7th ed.) Citation

Long, R. E. (1993). Drugs in America. The reference shelf.

Chicago Style (17th ed.) Citation

Long, Robert Emmet. "Drugs in America." The Reference Shelf 1993.

MLA (9th ed.) Citation

Long, Robert Emmet. "Drugs in America." The Reference Shelf, 1993.

Warning: These citations may not always be 100% accurate.