Hoffer, Jeffrey A.
Addison-Wesley, 1998
Buku Teks
Hoffer, Jeffrey A.
The Benyamin/cummings pub, 1996
Buku Teks
Cleland, David I.
McGraw-Hill, 1972
Buku Teks
Hare, Van Court
Harcourt, Brace and World, 1967
Buku Teks
Hawryszkiewycz, Igor Titus
Prentice-Hall, 1988
Buku Teks