Smith, Ella Thea, author
New York Hartcourt, Brace And Company, 1951
Buku Teks
Smith, Ella Thea, author
Harcourt, Brace & World, 1961
Buku Teks
Smith, Ella Thea, author
Harcourt, Brace & World, 1959
Buku Teks
Mader, Sylvia S., author
McGraw-Hill , 1998
Buku Teks
Case, James F., author
Macmillan, 1979
Buku Teks