Kirkpatrick, Charles A.
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.
Richard D. Irwin. Inc., 1957
Buku Teks
Anderson, Lowell
Prentice-Hall, 1971
Buku Teks