Wuerthner, J.J.
Regnery, 1959
Buku Teks
Braeman, John
Thomas Y Crowill, 1969
Buku Teks
Mahood, H. R.
Scribner, 1967
Buku Teks
Woll, Peter
Little, Brown & Co., 1979
Buku Teks
Merriam, Robert E. (Robert Edward), 1918-, author
Harper & Brothers, 1957
Buku Teks