Sharp, Ansel M., author
McGraw-Hill, 2000
Buku Teks
Sharp, Ansel M., author
McGraw-Hill, 1998
Buku Teks
edited by Arthur L. Grey and John E. Elliot
Houghton Mifflin, 1965
Buku Teks
Burns, Arthur Edward, author
Harcourt, Brace, 1948
Buku Teks
Hogendorn, Jan S., author
Prentice-Hall, 1995
Buku Teks