Good, Carter V., author
Appleton Century Crofts, 1954
Buku Teks
Wiersma, William, author
Pearson/Allyn and Bacon, 2005
Buku Teks
Wiersma, William, author
Pearson, 2009
Buku Teks
Connaway, Lynn Silipigni, author
Libraries Unlimited, 2017
Buku Teks
Allen, T. Harrell, author
Praeger, 1978
Buku Teks