Sklare, Arnold B.
McGraw-Hill, 1964
Buku Teks
Waldo, Willis H.
Van Nostrand Reinhold, 1960
Koleksi Publik
Weisman, Herman M.
Charles E. Merrill Publishing Company, 1980
Buku Teks
Churchill Livingstone, 2003
Buku Teks
Bogg, Daisy
McGraw-Hill, 2012
Buku Teks