Robinson, Roland
Anus and Robertson, 1971
Buku Teks
Robinson, Rolland
Macmillan, 1973
Buku Teks
Robinson, Roland I.
McGraw-Hill , 1962
Buku Teks
Nehru, Jawaharlal, 1889-1964
Oxford University Press, 1982,
Buku Referensi
Nehru, Jawaharlal, 1889-1964
Oxfrod University Press, 1982
Buku Teks