Tinker, Miles A., author
Appleton-Century-Crofts, 1962
Buku Teks
Burns, Paul C., author
Houghton Miffiln, 1984
Buku Teks
Patricia M. Cunningham ... [et al]
Longman, 1983
Buku Teks
by Martha Dallmann ... [et al.]
Holt, Rinehart and Winston, 1982
Buku Teks
Yopp, Ruth Helen, author
Allyn and Bacon, 1992
Buku Teks