Ferrell, Robert H.
W.W. Norton, 1959
Buku Teks
Fisher, Roger
Harper Torchbooks, 1969
Buku Teks
Jones, Howard
Franklin Watt , 1985
Buku Teks
Alstyne, Richard W. van
Stanford University Press, 1947
Buku Teks
Jones, Howard
Franklin Watts, 1985
Buku Teks