Bradley Levinson, Mica Pollock
Malden, MA : Wiley-Blackwell, 2016
Buku Teks
Ember, Carol R.
Prentice-Hall, 1985
Buku Teks
Haviland, William A.
Rinehart and Winston, 1974
Buku Teks
Haviland, William A.
Erlangga, 1988
Buku Teks
Foster, George M.
Brown and Comp, 1969
Buku Teks