Simonsen, Clifford E., author
Pearson/Prentice Hall, 2004
Buku Teks
McNeill, William H., author
Unoiversity Of Chicago, 1954
Buku Teks
Augustynek, Zdzislaw, author
Kluwer Academic, 1989
Buku Teks
Monica Janowski, Tim Ingold.
Routledge, 2016
Buku Teks
Petrov, Vladimir, author
American Institute fo Public Research, 1975
Buku Teks