Stanford University Press, 1967
Buku Teks
Stanfort University Press, 1964
Buku Teks
Halpern, Manfred
Princeton University Press, 1963
Buku Teks
edited by George Dalton
New York, 1971
Buku Teks
edited by E.K. Fisk
Australia National University, 1966
Buku Teks