Jennings, Eugene E., author
Harper & Row, 1962
Buku Teks
Bennett, Willard E., author
McGraw-Hill, 1959
Buku Teks
by the editors of Fortune
Doubleday, 1956
Buku Teks
Levinson, Harry, author
Harvard University Press, 1971
Buku Teks
Raden Ngabehi Pujaharja
[publisher not identified], [date of publication not identified]
Naskah