Barnett, H.G., author
Row, Peterson , 1956
Buku Teks
Ingold, Tim, 1948-, author
Routledge, 2018
Buku Teks
Ember, Carol R., author
Prentice-Hall, 1985
Buku Teks
Haviland, William A., author
Rinehart and Winston, 1974
Buku Teks
France, Diane L, author
Cengage Learning, 2018
Buku Teks