Crank, John
Oxford Univ. Press , 1962
Buku Teks SO
Barnett, Raymond A.
Dellem , 1981
Buku Teks SO
Barnett, Raymond A.
Dellen, 1981
Buku Teks SO
Hardy, F. Lane
West Publishing, 1984
Buku Teks SO
Barnett, Raymond A.
Pearson-Prentice-Hall, 2008
Buku Teks SO