Garton, Stephen
Allen & Unwin, 1990
Buku Teks
Kirst-Ashman, Karen Kay, author
Cengage Learning , 2017
Buku Teks
Kirst, Ashman Karen Kay, author
Cengage Learning, 2013
Buku Teks
Nehru, Jawaharlal, 1889-1964, author
The Planning Commision, 1955
Buku Teks
Weinberger, Paul E., author
Macmillan, 1969
Buku Teks