Tuan, Yi-fu
Columbia University, 1990
Buku Teks
Lewoleba, Gregorius Goran, author
Program Pascasarjana Universitas Indonesia, 1991
UI - Tesis Membership
Sumardi, author
Program Pascasarjana Universitas Indonesia, 1989
UI - Tesis Membership
Cunningham, William P., author
McGraw-Hill, 2002
Buku Teks
Cunningham, William P., author
McGraw-Hill, Higher Education, 2009
Buku Teks