Schleh, Edward C.
Prentice-Hall, 1958
Buku Teks
by Herbert G. Henemen III ... [et.al.]
Richard D. Irwin, 1989
Buku Teks
Flippo, Edwin B.
McGraw-Hill Kogakusha, 1976
Buku Teks
Heckman, I.L.
Charles E. Merrill, 1962
Buku Teks SO
Chruden, Herbert J.
South-Western Publishing, 1976
Buku Teks SO