Fraleigh, John B.
Addison-Wesley, 1998
Buku Teks SO
Hillman, Abraham P.
PW Publishing Company, 1994
Buku Teks SO
Smith, Jonathan D.H.
CRC Press, Taylor & Francis Group, 2009
Buku Teks SO
Whitelaw, Thomas A.
Blackie Academic & Professional, 1995
Buku Teks SO
Barnes, Wilfred E.
D. C. Hearth, 1963
Buku Teks SO