Gaya APA
Rosenthal, R. (1971).
The Sign Of The Ivory Horn: eastern african civilizations (Pertama).
Dobbs Ferry:
Oceana Publications.
Gaya MLA
Rosenthal, Ricky.
"The Sign Of The Ivory Horn: eastern african civilizations".
Pertama
Dobbs Ferry:
Oceana Publications,
1971.
Text.