Fritscher, A. Lee
Little, Brown & Co., 1980
Buku Teks
Newman, Philip C.
Frederick A. Praeger, Inc , 1956
Buku Teks
Corley, Robert Neil, author
McGraw-Hill, 1968
Buku Teks
Menteri Negara Koordinator Bidang Industri dan Perdagangan, 1994
Buku Teks
Edwards, Corwin D., author
Ocean Publications , 1966
Buku Teks