edited by Richard S. Kirkendall
John Wiley , 1973
Buku Teks
Gordon, Lincoln, author
Harvard University Press, 1963
Buku Teks
Pertamina, 1992
Buku Referensi
Stavrianos, L.S.
W.H. Freeman and Company, 1976
Buku Teks
Halacy, D.S. (Daniel Stephen)
Harper & Row , [1963]
Buku Teks