Great Britain: Methuen & Co, 1971
Buku Teks
East, W. Gordon
Methuen, 1950
Buku Teks
edited by W. Gordon East and O.H.K. Spate
Methuen, 1950
Buku Teks
Vandenbosch, Amry, author
University of Kentucy Paperbacks, 1967
Buku Teks
Shabad, Theodore, author
Frederick A. Praeger, 1956
Buku Teks