Wertheim, W.F. (Willem Frederik), author
W. Van Hoeve, 1964
Buku Teks
Clyde, Paul H. (Paul Hibbert), author
Prentice-Hall, [date of publication not identified]
Buku Teks
Clyde, Paul Hibbert, author
Prentice-Hall, 1960
Buku Teks
Singh, Patwant
Distributed by Prisma, Aurelec, 1996
Buku Teks
Artikel Jurnal