Wright, Mary Clabaugh
Stanford University Press, 1957
Buku Teks
Wright, Mary Clabaugh
Stanford University Press,, 1962
Buku Teks
Stanford university press, 1964
Buku Teks
Wright, Stanley F.
Mullan for The Queen's University, 1950-1954
Buku Teks
O`Dowd, Edward C.
Routledge , 2007
Buku Teks