Legum, Colin, author
Frederick A. Praeger, 1964
Buku Teks
Browne, G.S., author
F.W. Chesire, 1960
Buku Teks
Urling-Smith, F.M., author
Oxford University Press, 1949
Buku Teks
edited by Per Wastberg
Almqvist-Wiksel, 1968
Buku Teks
Hatch, John, author
Frederick A. Praeger, 1965
Buku Teks