Weinberg, Stanley L., author
Allyn and Bacon, 1974
Buku Teks
Buffaloe, Neal D., author
Prentice-Hall, 1973
Buku Teks
Mader, Sylvia S., author
McGraw-Hill, Higher Education, 2006
Buku Teks
Mader, Sylvia S., author
W.C. Brown , 1988
Buku Teks
Postlethwait, John H.
McGraw-Hill Publishing Company, 1989
Buku Referensi