Jones, Gavin W.
Irvington, 1975
Buku Teks
Chandrasekhar, S.
University of North Carolina Press, 1972
Buku Teks
Tan, Ngoc Chau
Unesco, 1972
Buku Teks
Von der Mehden, Fred R.
Prentice-Hall, 1969
Buku Teks
Von der Mehden, Fred R.
Prentice-Hall, 1964
Buku Teks