New York Pocket Books 1957
Buku Teks
Parkinson, Claire L., author
G.K. Hall, 1984
Buku Teks
Lipson, Leslie, author
Prentice-Hall, 1960
Buku Teks
Lipson, Leslie, author
Prentice-Hall, 1954
Buku Teks
Lipson, Leslie, author
Prentice-Hall, 1965
Buku Teks