Badger, Ralph Eastman, 1890-, author
Prentice-Hall, 1951
Buku Teks
Bellemore, Douglas H., author
South-Western Publishing, 1974
Buku Teks
Badger, Ralph Eastman, 1890-, author
Prentice-Hall, 1951
Buku Teks
Christy, George A., author
McGraw-Hill, 1960
Buku Teks
Suad Husnan, author
UPP AMP YKPN , 1996
Buku Teks