Griffiths, Percival, Sir, 1899-
Ernest Benn, 1958
Buku Teks
Griffiths, Percival, Sir, 1899-
Praeger, 1957
Buku Teks
Spear, Percival
University of Michigan Press, 1961
Buku Teks
Spear, Percival
The University of Michigan Press, 1961
Buku Teks
Chandra, Bipan
National Council of Educational Research and Training, 1971
Buku Teks