Stevick, Earl W. Yoruba : : basic course / [electronic resource] / Earl W. Stevick, Olaleye Aremu.. — Washington : : Dept. of State : : [For sale by the Superintendent of Documents, U.S. Govt. Print. Off.],, 1963.. — xxxviii, 343 p. : : ill. ; 27 cm. — (Basic course series). - Foreign Service Institute basic course series. .