Barrett, Terry, 1945-, author
McGraw-Hill, 2012
Buku Teks
Barck, Oscar Theodore, Jr., 1902-1993, author
Macmillan, 1965
Buku Teks
Link, Arthur S., author
Alfreda A. Knopf, 1955
Buku Teks
Link, Arthur S., author
Alfreda A. Knopf, 1963
Buku Teks
Dulles, Foster Rhea, author
Houghton-Mifflin, 1945
Buku Teks