Huszar, George B. de (George Bernard), 1919-1968, author
Littlefield, Adams, 1959
Buku Teks
Field, G. Lowell, author
Buku Teks
Shively, W. Phillips, 1942-, author
McGraw-Hill, 2011
Buku Teks
Evera, Stephen van, author
Cornell University Press, 1997
Buku Teks
Ebenstein, William, author
Rinehart, 1960
Buku Teks