Friedmann, Wolfgang, 1907-1972, author
Macmillan, 1951
Buku Teks
Barnes, James F., author
St. Martin`s Press, 1980
Buku Teks
Cammack, Paul Anthony, author
Macmillan, 1993
Buku Teks
Ethridge, Marcus E., author
Wadsworth, 2010
Buku Teks
Friedmann, Wolfgang, 1907-1972, author
W. Van Hoeve, 1954
Buku Teks