Kumar, Krishan
Blackwell, 1996
Buku Teks
Rosenau, Pauline Marie
princeton University Press, 1992
Buku Teks
Outhwaite, William
Blackwell, 2006
Buku Teks SO
edited by Charles Jencks
Academy Editions, 1992
Buku Teks
Lubis, Akhyar Yusuf
RajaGrafindo Persada, 2016
Buku Teks