Walker, James W., author
McGraw-Hill , 1980
Buku Teks
Niehaus, Richard J., author
John Wiley, 1979
Buku Teks
Hall, Thomas L.
The John Hopkins University Press , 1969
Buku Teks
Baker, Timothy D., author
The John Hopkins University Press , 1967
Buku Teks
Taylor, Carl E., author
The John Hopkins University Press , 1968
Buku Teks