Barlowe, Raleigh, author
Prentice-Hall, 1978
Buku Teks
Barlowe, Raleigh, author
Prentice-Hall, 1958
Buku Teks
Dipasquale, Denise, author
Prentice-Hall, 1996
Buku Teks
Barlowe, Raleigh, author
Prentice-Hall, 1961
Buku Teks
Ely, Richard T., author
University of Wisconsin Press, 1964
Buku Teks