Barnet, Sylvan, author
Batsford Academic and Educational, 1985
Buku Teks
Hammond, Eugene R., author
McGraw-Hill, 1989
Buku Teks
Veit, Richard, author
Pearson, 2001
Buku Teks
Margaret Anzul, author
Routledge, 2001
Buku Teks
Mundhenk, Robert T., author
Houghton Mifflin, 1978
Buku Teks