Harrison, John B.
Alfred A. Knopf, 1969
Buku Teks
Harrison, John B.
Alfred A. Knopf , 1966
Buku Teks
Sherry, John C., author
Collier Books, 1963
Buku Teks
Lurier, Harold E.
Collier Books,, 1963.
Buku Teks
Harrison, Brian, author
MacMillan & Co., 1957
Buku Teks