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