کتاب های Grover Hudson.
Highland East Cushitic dictionary
Hudson, Grover, 1989
Essentials of Amharic
Anbessa Teferra ; Grover Hudson., 2007.
Northeast African Semitic: Lexical Comparisons and Analysis
Grover Hudson, 2013
Northeast African Semitic: Lexical Comparisons and Analysis
Grover Hudson, 2013
