APA (7th ed.) Citation

Williams, A. R. (1926). World trade in prepared medicines: Venezuela. [publisher not identified].

Chicago Style (17th ed.) Citation

Williams, Arthur R. World Trade in Prepared Medicines: Venezuela. Washington, D.C.: [publisher not identified], 1926.

MLA (9th ed.) Citation

Williams, Arthur R. World Trade in Prepared Medicines: Venezuela. [publisher not identified], 1926.