Barry, Roger G.
Routledge, 1998
Buku Teks
Aguado, Edward
Prentice-Hall, 2001
Buku Teks
Ahrens, C. Donald
Brooks/Cole, Cengage Learning, , 2011
Buku Teks
Ahrens, C. Donald
Brooks/Cole Cengage Learning, 2011
Buku Teks
editor Haryati Soebadio
Archipelago Press, 1998
Buku Teks SO