Pervin, William J., author
Academic Press, 1964
Buku Teks SO
Patty, C. Wayne, author
PWS Publishing, 1993
Buku Teks SO
Nagata, Jun-Iti, author
North-Holland, 1985
Buku Teks
edited by L.F. McAuley, M.M. Rao
Academic Press, 1981
Buku Teks SO
James, I.M., author
Springer-Verlag , 1984
Buku Teks SO