Blond, Georges, author
Macmillan, 1954
Buku Teks
Mcdonough, Frank, author
Cambridge University Press , 2000
Buku Teks
Kagan, Shelly, author
Yale University Press, 2012
Buku Teks
Kagan, Shelly, author
Yale University Press, 2012
Buku Teks
Bullock, Alan, author
Harper and Row, 1962
Buku Teks