Fernald, Charles H., author
Prentice-Hall, 1959
Buku Teks
Kirkpatrick, Charles A., author
South-Western Publishing, 1976
Buku Teks
Baduara S, Satar
Akademika Pressindo, 1984
Buku Teks
Baduara S, Satar
Akademika Pressindo, 1984
Buku Teks
Pederson, Carlton A., author
Richard D. Irwin. Inc., 1957
Buku Teks