edited Scott G. Mcnall
Little, Brown, 1968
Buku Teks
Wright, Charles Robert
Random House, 1975
Buku Teks
edited by Scott G. McNall
Little, Brown and Company, 1968
Buku Teks
Grindstaff, Carl F.
Christopher Publishing House, 1981
Buku Teks
Foster, Lois E.
Prentice-Hall, 1981
Buku Teks