Weisman, Herman M.
Charles E. Merrill, 1980
Buku Teks SO
Sklare, Arnold B.
McGraw-Hill, 1964
Buku Teks
Rougier, Harry
W.W. Norton, 1970
Buku Teks SO
Waldo, Willis H.
Van Nostrand Reinhold, 1960
Koleksi Publik
Modern Business reports, 1987
Buku Teks SO