Eisenstadt, Shmuel Noah
Prentice-Hall, 1966
Buku Teks
Crano, William D.
Lawrence Erlbaum Assossiate, 2002
Buku Teks
Markland, Robert E.
John Wiley & Sons, 1987
Buku Teks
Wagner, Harvey M.
Prentice-Hall, 1969
Buku Teks
Mila Gasco-Hermandez
Springer, 2014
Buku Teks