Taylor, Peter J., author
Prentice-Hall, 2000
Buku Teks
Mellor, Roy E. H.
Routledge, 1989
Buku Teks
De Blij, Harm J., author
John Wiley & Sons, 1967
Buku Teks
Jackson, W.A. Douglas, author
Prenciton-Hall , 1964
Buku Teks
Karin Aramitha Iswari, author
2016
UI - Tesis (Membership)