Hayes, Carlton J. H.
Macmillan, 1932
Buku Teks
Lindemann, Albert S.
John Wiley & Sons, 2013
Buku Teks
Becker, Carl L. (Carl Lotus), 1873-1945
Silver Burdett, 1944
Buku Teks
Oxford University Press , 1996
Buku Teks
Becker, Carl L. (Carl Lotus), 1873-1945
Silver Burdett, 1944
Buku Teks