Marsh, Donald Bailey
Harcowith, Brace and Company , 1951
Buku Teks
Johnson, Harry G., author
George Allen and Unwin, 1958
Buku Teks
Root, Franklin R., author
Sout-Western, 1966
Buku Teks
Lewin, Pauline
Frederick A. Praeger, 1967
Buku Teks
Soedjono Dirdjosisworo, author
Utomo, 2004
Buku Teks